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link之家  ›  Type.GetMethod Method (System) | Microsoft Learn
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https://learn.microsoft.com/en-us/dotnet/api/system.type.getmethod?view=net-8.0
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Download Microsoft Edge More info about Internet Explorer and Microsoft Edge GetMethod(String, Int32, BindingFlags, Binder, CallingConventions, Type[], ParameterModifier[])

Searches for the specified method whose parameters match the specified generic parameter count, argument types and modifiers, using the specified binding constraints and the specified calling convention. 

public:
 System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, int genericParameterCount, System::Reflection::BindingFlags bindingAttr, System::Reflection::Binder ^ binder, System::Reflection::CallingConventions callConvention, cli::array <Type ^> ^ types, cli::array <System::Reflection::ParameterModifier> ^ modifiers);
public System.Reflection.MethodInfo? GetMethod (string name, int genericParameterCount, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder? binder, System.Reflection.CallingConventions callConvention, Type[] types, System.Reflection.ParameterModifier[]? modifiers);
public System.Reflection.MethodInfo GetMethod (string name, int genericParameterCount, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, System.Reflection.CallingConventions callConvention, Type[] types, System.Reflection.ParameterModifier[] modifiers);
member this.GetMethod : string * int * System.Reflection.BindingFlags * System.Reflection.Binder * System.Reflection.CallingConventions * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.MethodInfo
Public Function GetMethod (name As String, genericParameterCount As Integer, bindingAttr As BindingFlags, binder As Binder, callConvention As CallingConventions, types As Type(), modifiers As ParameterModifier()) As MethodInfo

Parameters

A bitwise combination of the enumeration values that specify how the search is conducted.

Default to return null .

An object that defines a set of properties and enables binding, which can involve selection of an overloaded method, coercion of argument types, and invocation of a member through reflection.

A null reference ( Nothing in Visual Basic), to use the DefaultBinder .

An array of Type objects representing the number, order, and type of the parameters for the method to get.

An empty array of Type objects (as provided by the EmptyTypes field) to get a method that takes no parameters.

An array of ParameterModifier objects representing the attributes associated with the corresponding element in the types array. To be only used when calling through COM interop, and only parameters that are passed by reference are handled. The default binder does not process this parameter.

Returns 

public:
 System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, System::Reflection::BindingFlags bindingAttr, System::Reflection::Binder ^ binder, System::Reflection::CallingConventions callConvention, cli::array <Type ^> ^ types, cli::array <System::Reflection::ParameterModifier> ^ modifiers);
public:
 virtual System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, System::Reflection::BindingFlags bindingAttr, System::Reflection::Binder ^ binder, System::Reflection::CallingConventions callConvention, cli::array <Type ^> ^ types, cli::array <System::Reflection::ParameterModifier> ^ modifiers);
public System.Reflection.MethodInfo? GetMethod (string name, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder? binder, System.Reflection.CallingConventions callConvention, Type[] types, System.Reflection.ParameterModifier[]? modifiers);
public System.Reflection.MethodInfo GetMethod (string name, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, System.Reflection.CallingConventions callConvention, Type[] types, System.Reflection.ParameterModifier[] modifiers);
member this.GetMethod : string * System.Reflection.BindingFlags * System.Reflection.Binder * System.Reflection.CallingConventions * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.MethodInfo
abstract member GetMethod : string * System.Reflection.BindingFlags * System.Reflection.Binder * System.Reflection.CallingConventions * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.MethodInfo
override this.GetMethod : string * System.Reflection.BindingFlags * System.Reflection.Binder * System.Reflection.CallingConventions * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.MethodInfo
Public Function GetMethod (name As String, bindingAttr As BindingFlags, binder As Binder, callConvention As CallingConventions, types As Type(), modifiers As ParameterModifier()) As MethodInfo

Parameters

A bitwise combination of the enumeration values that specify how the search is conducted.

Default to return null .

An object that defines a set of properties and enables binding, which can involve selection of an overloaded method, coercion of argument types, and invocation of a member through reflection.

A null reference ( Nothing in Visual Basic), to use the DefaultBinder .

An array of Type objects representing the number, order, and type of the parameters for the method to get.

An empty array of Type objects (as provided by the EmptyTypes field) to get a method that takes no parameters.

An array of ParameterModifier objects representing the attributes associated with the corresponding element in the types array. To be only used when calling through COM interop, and only parameters that are passed by reference are handled. The default binder does not process this parameter.

Returns

An object representing the method that matches the specified requirements, if found; otherwise, null .

Implements

GetMethod(String, BindingFlags, Binder, CallingConventions, Type[], ParameterModifier[])

Examples

The following example finds specific overloads of MethodA , specifying binding constraints, calling conventions, and a variety of argument types.

The Visual C# 2005 example requires the /unsafe compiler option. 

using namespace System;
using namespace System::Reflection;
public ref class Program
public:
    // Methods to get:
    void MethodA(int i, int j) { }
    void MethodA(array<int>^ iarry) { }
    void MethodA(double *ip) { }
    // Method that takes a managed reference paramter.
    void MethodA(int% r) {}
int main()
    MethodInfo^ mInfo;
    // Get MethodA(int i, int j)
    mInfo = Program::typeid->GetMethod("MethodA",
        BindingFlags::Public | BindingFlags::Instance,
        nullptr,
        CallingConventions::Any,
        gcnew array<Type^> {int::typeid, int::typeid},
        nullptr);
    Console::WriteLine("Found method: {0}", mInfo );
    // Get  MethodA(array<int>^ iarry)
    mInfo = Program::typeid->GetMethod("MethodA",
        BindingFlags::Public | BindingFlags::Instance,
        nullptr,
        CallingConventions::Any,
        gcnew array<Type^> {int::typeid->MakeArrayType()},
        nullptr);
    Console::WriteLine("Found method: {0}", mInfo );
    // Get MethodA(double *ip)
    mInfo = Program::typeid->GetMethod("MethodA",
        BindingFlags::Public | BindingFlags::Instance,
        nullptr,
        CallingConventions::Any,
        gcnew array<Type^> {double::typeid->MakePointerType()},
        nullptr);
    Console::WriteLine("Found method: {0}", mInfo );
    // Get MethodA(int% r)
    mInfo = Program::typeid->GetMethod("MethodA",
        BindingFlags::Public | BindingFlags::Instance,
        nullptr,
        CallingConventions::Any,
        gcnew array<Type^> {int::typeid->MakeByRefType()},
        nullptr);
    Console::WriteLine("Found method: {0}", mInfo );
using System;
using System.Reflection;
class Program3
    // Methods to get:
    public void MethodA(int i, int j) { }
    public void MethodA(int[] i) { }
    public unsafe void MethodA(int* i) { }
    public void MethodA(ref int r) {}
    // Method that takes an out parameter:
    public void MethodA(int i, out int o) { o = 100;}
  static void Main(string[] args)
    MethodInfo mInfo;
    // Get MethodA(int i, int j)
    mInfo = typeof(Program).GetMethod("MethodA",
        BindingFlags.Public | BindingFlags.Instance,
        null,
        CallingConventions.Any,
        new Type[] { typeof(int), typeof(int) },
        null);
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(int[] i)
    mInfo = typeof(Program).GetMethod("MethodA",
        BindingFlags.Public | BindingFlags.Instance,
        null,
        CallingConventions.Any,
        new Type[] { typeof(int[]) },
        null);
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(int* i)
    mInfo = typeof(Program).GetMethod("MethodA",
        BindingFlags.Public | BindingFlags.Instance,
        null,
        CallingConventions.Any,
        new Type[] { typeof(int).MakePointerType() },
        null);
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(ref int r)
    mInfo = typeof(Program).GetMethod("MethodA",
        BindingFlags.Public | BindingFlags.Instance,
        null,
        CallingConventions.Any,
        new Type[] { typeof(int).MakeByRefType() },
        null);
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(int i, out int o)
    mInfo = typeof(Program).GetMethod("MethodA",
        BindingFlags.Public | BindingFlags.Instance,
        null,
        CallingConventions.Any,
        new Type[] { typeof(int), typeof(int).MakeByRefType() },
        null);
    Console.WriteLine("Found method: {0}", mInfo);

open System.Reflection
type Program() =
    // Methods to get:
    member _.MethodA(i: int, j: int) = ()
    member _.MethodA(i: int[]) = ()
    member _.MethodA(i: int nativeptr) = ()
    member _.MethodA(r: int byref) = ()
    // Method that takes an outref parameter:
    member _.MethodA(i: int, o: int outref) = o <- 100
    // Get MethodA(int i, int j)
    let mInfo = 
        typeof<Program>.GetMethod("MethodA", BindingFlags.Public ||| BindingFlags.Instance, null, CallingConventions.Any, [| typeof<int>; typeof<int> |], null)
    printfn $"Found method: {mInfo}"
    // Get MethodA(int[] i)
    let mInfo = 
        typeof<Program>.GetMethod("MethodA", BindingFlags.Public ||| BindingFlags.Instance, null, CallingConventions.Any, [| typeof<int[]> |], null)
    printfn $"Found method: {mInfo}"
    // Get MethodA(int* i)
    let mInfo = 
        typeof<Program>.GetMethod("MethodA", BindingFlags.Public ||| BindingFlags.Instance, null, CallingConventions.Any, [| typeof<int>.MakePointerType() |], null)
    printfn $"Found method: {mInfo}"
    // Get MethodA(ref int r)
    let mInfo = 
        typeof<Program>.GetMethod("MethodA", BindingFlags.Public ||| BindingFlags.Instance, null, CallingConventions.Any, [| typeof<int>.MakeByRefType() |], null)
    printfn $"Found method: {mInfo}"
    // Get MethodA(int i, out int o)
    let mInfo = 
        typeof<Program>.GetMethod("MethodA", BindingFlags.Public ||| BindingFlags.Instance, null, CallingConventions.Any, [| typeof<int>; typeof<int>.MakeByRefType() |], null)
    printfn $"Found method: {mInfo}"
Imports System.Reflection
Imports System.Runtime.InteropServices
Class Program
    ' Methods to get:
    Public Overloads Sub MethodA(ByVal i As Integer, ByVal l As Long)
    End Sub
    Public Overloads Sub MethodA(ByVal i() As Integer)
    End Sub
    Public Overloads Sub MethodA(ByRef r As Integer)
    End Sub
    ' Method that takes an integer and an out parameter. Note that an
    ' Imports reference is needed to System.Runtime.InteropServices
    ' for the <OutAttribute>, which can be shortened to <Out>.
    Public Overloads Sub MethodA(ByVal i As Integer, <Out()> ByRef o As Integer)
        o = 100
    End Sub
    Public Shared Sub Main(ByVal args() As String)
        Dim mInfo As MethodInfo
        ' Get MethodA(ByVal i As Integer, ByVal l As Long)
        mInfo = GetType(Program).GetMethod("MethodA", _
            BindingFlags.Public Or BindingFlags.Instance, _
            Nothing, _
            CallingConventions.Any, _
            New Type() {GetType(System.Int32), _
            GetType(System.Int64)}, _
            Nothing)
        Console.WriteLine("Found method: {0}", mInfo)
        ' Get  MethodA(ByVal i() As Integer)
        mInfo = GetType(Program).GetMethod("MethodA", _
            BindingFlags.Public Or BindingFlags.Instance, _
            Nothing, _
            CallingConventions.Any, _
            New Type() {GetType(System.Int32())}, _
            Nothing)
        Console.WriteLine("Found method: {0}", mInfo)
        ' Get MethodA(ByRef r As Integer)
        mInfo = GetType(Program).GetMethod("MethodA", _
        BindingFlags.Public Or BindingFlags.Instance, _
        Nothing, _
        CallingConventions.Any, _
        New Type() {GetType(System.Int32).MakeByRefType}, _
        Nothing)
        Console.WriteLine("Found method: {0}", mInfo)
        ' Get MethodA(ByVal i As Integer, <Out()> ByRef o As Integer)
        mInfo = GetType(Program).GetMethod("MethodA", _
        BindingFlags.Public Or BindingFlags.Instance, _
        Nothing, _
        CallingConventions.Any, _
        New Type() {GetType(System.Int32), GetType(System.Int32).MakeByRefType}, _
        Nothing)
        Console.WriteLine("Found method: {0}", mInfo)
    End Sub
End Class
    	
Remarks

    	
Although the default binder does not process ParameterModifier (the modifiers parameter), you can use the abstract System.Reflection.Binder class to write a custom binder that does process modifiers. ParameterModifier is only used when calling through COM interop, and only parameters that are passed by reference are handled.




    



The following table shows what members of a base class are returned by the GetXXX methods when reflecting on a type.

Member Type
Static
Non-Static
Event
Not applicable
The common type system rule is that the inheritance is the same as that of the methods that implement the property. Reflection treats properties as hide-by-name-and-signature. See note 2 below.
Method
Yes. A method (both virtual and non-virtual) can be hide-by-name or hide-by-name-and-signature.
Nested Type
Property
Not applicable
The common type system rule is that the inheritance is the same as that of the methods that implement the property. Reflection treats properties as hide-by-name-and-signature. See note 2 below.

  • Hide-by-name-and-signature considers all of the parts of the signature, including custom modifiers, return types, parameter types, sentinels, and unmanaged calling conventions. This is a binary comparison.
    

  • For reflection, properties and events are hide-by-name-and-signature. If you have a property with both a get and a set accessor in the base class, but the derived class has only a get accessor, the derived class property hides the base class property, and you will not be able to access the setter on the base class.
    

  • Custom attributes are not part of the common type system.
    

    The following BindingFlags filter flags can be used to define which methods to include in the search:
    

  • You must specify either BindingFlags.Instance or BindingFlags.Static in order to get a return.
    

  • Specify BindingFlags.Public to include public methods in the search.
    

  • Specify BindingFlags.NonPublic to include nonpublic methods (that is, private, internal, and protected methods) in the search.
    

  • Specify BindingFlags.FlattenHierarchy to include public and protected static members up the hierarchy; private static members in inherited classes are not included.
    

    The following BindingFlags modifier flags can be used to change how the search works:
    

  • BindingFlags.IgnoreCase to ignore the case of name.
    

  • BindingFlags.DeclaredOnly to search only the methods declared on the Type, not methods that were simply inherited.
    

    See System.Reflection.BindingFlags for more information.
    

    You cannot omit parameters when looking up constructors and methods. You can only omit parameters when invoking.
    

    If the current Type represents a constructed generic type, this method returns the MethodInfo with the type parameters replaced by the appropriate type arguments.
    

    If the current Type represents a type parameter in the definition of a generic type or generic method, this method searches the methods of the class constraint, or the methods of Object if there is no class constraint.
    

    For generic methods, do not include the type arguments in name. For example, the C# code GetMember("MyMethod<int>") searches for a member with the text name "MyMethod<int>", rather than for a method named MyMethod that has one generic argument of type int.
    

  • CallingConventions
    • 

  • ParameterModifier
    • 

  • GetMethodImpl(String, BindingFlags, Binder, CallingConventions, Type[], ParameterModifier[])
    • 

  • GetMethods()
    • 
  
    Applies to
    
	
    public:
 System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, int genericParameterCount, System::Reflection::BindingFlags bindingAttr, System::Reflection::Binder ^ binder, cli::array <Type ^> ^ types, cli::array <System::Reflection::ParameterModifier> ^ modifiers);
    
	
    public System.Reflection.MethodInfo? GetMethod (string name, int genericParameterCount, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder? binder, Type[] types, System.Reflection.ParameterModifier[]? modifiers);
    
	
    public System.Reflection.MethodInfo GetMethod (string name, int genericParameterCount, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, Type[] types, System.Reflection.ParameterModifier[] modifiers);
    
	
    member this.GetMethod : string * int * System.Reflection.BindingFlags * System.Reflection.Binder * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.MethodInfo
    
	
    Public Function GetMethod (name As String, genericParameterCount As Integer, bindingAttr As BindingFlags, binder As Binder, types As Type(), modifiers As ParameterModifier()) As MethodInfo
    
	
    Parameters
    
		
    A bitwise combination of the enumeration values that specify how the search is conducted.
    

    Default to return null.
    
		
    An object that defines a set of properties and enables binding, which can involve selection of an overloaded method, coercion of argument types, and invocation of a member through reflection.
    

    A null reference (Nothing in Visual Basic), to use the DefaultBinder.
    
		
    An array of Type objects representing the number, order, and type of the parameters for the method to get.
    

    An empty array of Type objects (as provided by the EmptyTypes field) to get a method that takes no parameters.
    
		
    An array of ParameterModifier objects representing the attributes associated with the corresponding element in the types array. To be only used when calling through COM interop, and only parameters that are passed by reference are handled. The default binder does not process this parameter.
    
	
    Returns
    
	
    public:
 virtual System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, System::Reflection::BindingFlags bindingAttr, System::Reflection::Binder ^ binder, cli::array <Type ^> ^ types, cli::array <System::Reflection::ParameterModifier> ^ modifiers);
    
	
    public System.Reflection.MethodInfo? GetMethod (string name, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder? binder, Type[] types, System.Reflection.ParameterModifier[]? modifiers);
    
	
    public System.Reflection.MethodInfo GetMethod (string name, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, Type[] types, System.Reflection.ParameterModifier[] modifiers);
    
	
    abstract member GetMethod : string * System.Reflection.BindingFlags * System.Reflection.Binder * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.MethodInfo
override this.GetMethod : string * System.Reflection.BindingFlags * System.Reflection.Binder * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.MethodInfo
    
	
    Public Function GetMethod (name As String, bindingAttr As BindingFlags, binder As Binder, types As Type(), modifiers As ParameterModifier()) As MethodInfo
    
	
    Parameters
    
		
    A bitwise combination of the enumeration values that specify how the search is conducted.
    

    Default to return null.
    
		
    An object that defines a set of properties and enables binding, which can involve selection of an overloaded method, coercion of argument types, and invocation of a member through reflection.
    

    A null reference (Nothing in Visual Basic), to use the DefaultBinder.
    
		
    An array of Type objects representing the number, order, and type of the parameters for the method to get.
    

    An empty array of Type objects (as provided by the EmptyTypes field) to get a method that takes no parameters.
    
		
    An array of ParameterModifier objects representing the attributes associated with the corresponding element in the types array. To be only used when calling through COM interop, and only parameters that are passed by reference are handled. The default binder does not process this parameter.
    
	
    Returns
    
	
    An object representing the method that matches the specified requirements, if found; otherwise, null.
    
	
    Implements
    
						GetMethod(String, BindingFlags, Binder, Type[], ParameterModifier[])
						GetMethod(String, BindingFlags, Binder, Type[], ParameterModifier[])
  
    Examples
    
    	
    The following example finds specific overloads of MethodA, specifying binding constraints and a variety of argument types.
    

    The Visual C# 2005 example requires the /unsafe compiler option.
    

    using namespace System;
using namespace System::Reflection;
public ref class Program
public:
    // Methods to get:
    void MethodA(int i, int j) { }
    void MethodA(array<int>^ iarry) { }
    void MethodA(double *ip) { }
    // Method that takes a managed reference parameter.
    void MethodA(int% r) {}
int main()
    MethodInfo^ mInfo;
    // Get MethodA(int i, int j)
    mInfo = Program::typeid->GetMethod("MethodA",
        static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Instance),
        nullptr,
        gcnew array<Type^> {int::typeid, int::typeid},
        nullptr);
    Console::WriteLine("Found method: {0}", mInfo );
    // Get  MethodA(array<int>^ iarry)
    mInfo = Program::typeid->GetMethod("MethodA",
        static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Instance),
        nullptr,
        gcnew array<Type^> {int::typeid->MakeArrayType()},
        nullptr);
    Console::WriteLine("Found method: {0}", mInfo );
    // Get MethodA(double *ip)
    mInfo = Program::typeid->GetMethod("MethodA",
        static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Instance),
        nullptr,
        gcnew array<Type^> {double::typeid->MakePointerType()},
        nullptr);
    Console::WriteLine("Found method: {0}", mInfo );
    // Get MethodA(int% r)
    mInfo = Program::typeid->GetMethod("MethodA",
        static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Instance),
        nullptr,
        gcnew array<Type^> {int::typeid->MakeByRefType()},
        nullptr);
    Console::WriteLine("Found method: {0}", mInfo );
using System;
using System.Reflection;
class Program5
    // Methods to get:
    public void MethodA(int i, int j) { }
    public void MethodA(int[] i) { }
    public unsafe void MethodA(int* i) { }
    public void MethodA(ref int r) {}
    // Method that takes an out parameter.
    public void MethodA(int i, out int o) { o = 100; }
  static void Main(string[] args)
    MethodInfo mInfo;
    // Get MethodA(int i, int j)
    mInfo = typeof(Program).GetMethod("MethodA",
        BindingFlags.Public | BindingFlags.Instance,
        null,
        new Type[] { typeof(int), typeof(int) },
        null);
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(int[] i)
    mInfo = typeof(Program).GetMethod("MethodA",
        BindingFlags.Public | BindingFlags.Instance,
        null,
        new Type[] { typeof(int[]) },
        null);
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(int* i)
    mInfo = typeof(Program).GetMethod("MethodA",
        BindingFlags.Public | BindingFlags.Instance,
        null,
        new Type[] { typeof(int).MakePointerType() },
        null);
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(ref int r)
    mInfo = typeof(Program).GetMethod("MethodA",
        BindingFlags.Public | BindingFlags.Instance,
        null,
        new Type[] { typeof(int).MakeByRefType() },
        null);
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(int i, out int o)
    mInfo = typeof(Program).GetMethod("MethodA",
        BindingFlags.Public | BindingFlags.Instance,
        null,
        new Type[] { typeof(int), typeof(int).MakeByRefType() },
        null);
    Console.WriteLine("Found method: {0}", mInfo);

    open System
open System.Reflection
type Program() =
    // Methods to get:
    member _.MethodA(i: int, j: int) = ()
    member _.MethodA(i: int[]) = ()
    member _.MethodA(i: int nativeptr) = ()
    member _.MethodA(r: int byref) = ()
    // Method that takes an outref parameter:
    member _.MethodA(i: int, o: int outref) = o <- 100
    // Get MethodA(int i, int j)
    let mInfo = 
        typeof<Program>.GetMethod("MethodA",BindingFlags.Public ||| BindingFlags.Instance, null, [| typeof<int>; typeof<int> |], null)
    printfn $"Found method: {mInfo}"
    // Get MethodA(int[] i)
    let mInfo = 
        typeof<Program>.GetMethod("MethodA",BindingFlags.Public ||| BindingFlags.Instance, null, [| typeof<int[]> |], null)
    printfn $"Found method: {mInfo}"
    // Get MethodA(int* i)
    let mInfo = 
        typeof<Program>.GetMethod("MethodA",BindingFlags.Public ||| BindingFlags.Instance, null, [| typeof<int>.MakePointerType() |], null)
    printfn $"Found method: {mInfo}"
    // Get MethodA(ref int r)
    let mInfo = 
        typeof<Program>.GetMethod("MethodA",BindingFlags.Public ||| BindingFlags.Instance, null, [| typeof<int>.MakeByRefType() |], null)
    printfn $"Found method: {mInfo}"
    // Get MethodA(int i, out int o)
    let mInfo = 
        typeof<Program>.GetMethod("MethodA",BindingFlags.Public ||| BindingFlags.Instance, null, [| typeof<int>; typeof<int>.MakeByRefType() |], null)
    printfn $"Found method: {mInfo}"
Imports System.Reflection
Imports System.Runtime.InteropServices
Class Program
    ' Methods to get:
    Public Overloads Sub MethodA(ByVal i As Integer, ByVal l As Long)
    End Sub
    Public Overloads Sub MethodA(ByVal i() As Integer)
    End Sub
    Public Overloads Sub MethodA(ByRef r As Integer)
    End Sub
    ' Method that takes an out parameter. Note that an Imports
    ' reference is needed to System.Runtime.InteropServices 
    ' for the <OutAttribute>, which can be shortened to <Out>.
    Public Overloads Sub MethodA(ByVal i As Integer, <Out()> ByRef o As Integer)
        o = 100
    End Sub
    Public Shared Sub Main(ByVal args() As String)
        Dim mInfo As MethodInfo
        ' Get MethodA(ByVal i As Integer, ByVal l As Long)
        mInfo = GetType(Program).GetMethod("MethodA", _
            BindingFlags.Public Or BindingFlags.Instance, _
            Nothing, _
            New Type() {GetType(System.Int32), _
            GetType(System.Int64)}, _
            Nothing)
        Console.WriteLine("Found method: {0}", mInfo)
        ' Get MethodA(ByVal i() As Integer)
        mInfo = GetType(Program).GetMethod("MethodA", _
            BindingFlags.Public Or BindingFlags.Instance, _
            Nothing, _
            New Type() {GetType(System.Int32())}, _
            Nothing)
        Console.WriteLine("Found method: {0}", mInfo)
        ' Get MethodA(ByRef r As Integer)
        mInfo = GetType(Program).GetMethod("MethodA", _
            BindingFlags.Public Or BindingFlags.Instance, _
            Nothing, _
            New Type() {GetType(System.Int32).MakeByRefType}, _
            Nothing)
        Console.WriteLine("Found method: {0}", mInfo)
        ' Get MethodA(ByVal i As Integer, <Out()> ByRef o As Integer)
        mInfo = GetType(Program).GetMethod("MethodA", _
            BindingFlags.Public Or BindingFlags.Instance, _
            Nothing, _
            New Type() {GetType(System.Int32), GetType(System.Int32).MakeByRefType}, _
            Nothing)
        Console.WriteLine("Found method: {0}", mInfo)
    End Sub
End Class
    	
    Remarks
    
    	
    Although the default binder does not process ParameterModifier (the modifiers parameter), you can use the abstract System.Reflection.Binder class to write a custom binder that does process modifiers. ParameterModifier is only used when calling through COM interop, and only parameters that are passed by reference are handled.




    

    

    The following BindingFlags filter flags can be used to define which methods to include in the search:
    

  • You must specify either BindingFlags.Instance or BindingFlags.Static in order to get a return.
    

  • Specify BindingFlags.Public to include public methods in the search.
    

  • Specify BindingFlags.NonPublic to include nonpublic methods (that is, private, internal, and protected methods) in the search.
    

  • Specify BindingFlags.FlattenHierarchy to include public and protected static members up the hierarchy; private static members in inherited classes are not included.
    

    The following BindingFlags modifier flags can be used to change how the search works:
    

  • BindingFlags.IgnoreCase to ignore the case of name.
    

  • BindingFlags.DeclaredOnly to search only the methods declared on the Type, not methods that were simply inherited.
    

    See System.Reflection.BindingFlags for more information.
    

    You cannot omit parameters when looking up constructors and methods. You can only omit parameters when invoking.
    

    If the current Type represents a constructed generic type, this method returns the MethodInfo with the type parameters replaced by the appropriate type arguments.
    

    If the current Type represents a type parameter in the definition of a generic type or generic method, this method searches the methods of the class constraint, or the methods of Object if there is no class constraint.
    

    For generic methods, do not include the type arguments in name. For example, the C# code GetMember("MyMethod<int>") searches for a member with the text name "MyMethod<int>", rather than for a method named MyMethod that has one generic argument of type int.
    

  • DefaultBinder
    • 

  • ParameterModifier
    • 

  • GetMethodImpl(String, BindingFlags, Binder, CallingConventions, Type[], ParameterModifier[])
    • 

  • GetMethods()
    • 
  
    Applies to
    
	
    public:
 System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, int genericParameterCount, cli::array <Type ^> ^ types, cli::array <System::Reflection::ParameterModifier> ^ modifiers);
    
	
    public System.Reflection.MethodInfo? GetMethod (string name, int genericParameterCount, Type[] types, System.Reflection.ParameterModifier[]? modifiers);
    
	
    public System.Reflection.MethodInfo GetMethod (string name, int genericParameterCount, Type[] types, System.Reflection.ParameterModifier[] modifiers);
    
	
    member this.GetMethod : string * int * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.MethodInfo
    
	
    Public Function GetMethod (name As String, genericParameterCount As Integer, types As Type(), modifiers As ParameterModifier()) As MethodInfo
    
	
    Parameters
    
		
    An array of Type objects representing the number, order, and type of the parameters for the method to get.
    

    An empty array of Type objects (as provided by the EmptyTypes field) to get a method that takes no parameters.
    
		
    An array of ParameterModifier objects representing the attributes associated with the corresponding element in the types array. To be only used when calling through COM interop, and only parameters that are passed by reference are handled. The default binder does not process this parameter.
    
	
    Returns
    
	
    public:
 System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, int genericParameterCount, System::Reflection::BindingFlags bindingAttr, cli::array <Type ^> ^ types);
    
	
    public System.Reflection.MethodInfo? GetMethod (string name, int genericParameterCount, System.Reflection.BindingFlags bindingAttr, Type[] types);
    
	
    member this.GetMethod : string * int * System.Reflection.BindingFlags * Type[] -> System.Reflection.MethodInfo
    
	
    Public Function GetMethod (name As String, genericParameterCount As Integer, bindingAttr As BindingFlags, types As Type()) As MethodInfo
    
	
    Parameters
    
		
    A bitwise combination of the enumeration values that specify how the search is conducted.
    

    Default to return null.
    
		
    An array of Type objects representing the number, order, and type of the parameters for the method to get.
    

    An empty array of Type objects (as provided by the EmptyTypes field) to get a method that takes no parameters.
    
	
    Returns
    
	
    public:
 virtual System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, System::Reflection::BindingFlags bindingAttr);
    
	
    public System.Reflection.MethodInfo? GetMethod (string name, System.Reflection.BindingFlags bindingAttr);
    
	
    public System.Reflection.MethodInfo GetMethod (string name, System.Reflection.BindingFlags bindingAttr);
    
	
    abstract member GetMethod : string * System.Reflection.BindingFlags -> System.Reflection.MethodInfo
override this.GetMethod : string * System.Reflection.BindingFlags -> System.Reflection.MethodInfo
    
	
    Public Function GetMethod (name As String, bindingAttr As BindingFlags) As MethodInfo
    
	
    Parameters
    
		
    A bitwise combination of the enumeration values that specify how the search is conducted.
    

    Default to return null.
    
	
    Returns
    
	
    An object representing the method that matches the specified requirements, if found; otherwise, null.
    
	
    Implements
    
						GetMethod(String, BindingFlags)
						GetMethod(String, BindingFlags)
  
    Examples
    
    	
    The following example gets the method that matches the specified binding flags.
    

    using namespace System;
using namespace System::Reflection;
public ref class Program
    public:
        // Method to get:
        void MethodA() { }
    int main()
        // Get MethodA()
        MethodInfo^ mInfo = Program::typeid->GetMethod("MethodA",
            static_cast<BindingFlags>(BindingFlags::Public | BindingFlags::Instance));
        Console::WriteLine("Found method: {0}", mInfo );

    using System;
using System.Reflection;
class Program2
    // Method to get:
    public void MethodA() { }
    static void Main(string[] args)
        // Get MethodA()
        MethodInfo mInfo = typeof(Program).GetMethod("MethodA",
            BindingFlags.Public | BindingFlags.Instance);
        Console.WriteLine("Found method: {0}", mInfo);

    open System.Reflection
type Program() =
    // Method to get:
    member _.MethodA() = ()
// Get MethodA()
let mInfo = typeof<Program>.GetMethod("MethodA", BindingFlags.Public ||| BindingFlags.Instance)
printfn $"Found method: {mInfo}"
Imports System.Reflection
Class Program
    ' Method to get:
    Public Sub MethodA()
    End Sub
    Public Shared Sub Main(ByVal args() As String)
        ' Get MethodA()
        Dim mInfo As MethodInfo = GetType(Program).GetMethod("MethodA", _
            BindingFlags.Public Or BindingFlags.Instance)
        Console.WriteLine("Found method: {0}", mInfo)
    End Sub
End Class
    	
    Remarks
    
    	
    The following BindingFlags filter flags can be used to define which methods to include in the search:




    

    

  • You must specify either BindingFlags.Instance or BindingFlags.Static in order to get a return.
    

  • Specify BindingFlags.Public to include public methods in the search.
    

  • Specify BindingFlags.NonPublic to include non-public methods (that is, private, internal, and protected methods) in the search.
    

  • Specify BindingFlags.FlattenHierarchy to include public and protected static members up the hierarchy; private static members in inherited classes are not included.
    

    The following BindingFlags modifier flags can be used to change how the search works:
    

  • BindingFlags.IgnoreCase to ignore the case of name.
    

  • BindingFlags.DeclaredOnly to search only the methods declared on the Type, not methods that were simply inherited.
    

    See System.Reflection.BindingFlags for more information.
    

    If a method is overloaded and more than one overload meets the constraints specified by the bindingAttr argument, the method throws an AmbiguousMatchException exception. In the following example, an exception is thrown because:
    

  • The TestClass type has two public instance overloads of the DisplayValue method, DisplayValue(String) and DisplayValue(String, Object[]).
    

  • The TestClass type has two public instance overloads of the Equals method,  one of which is inherited from Object: Equals(TestClass) and Equals(Object).
    

    using System;
using System.Reflection;
public class TestClass
    public void DisplayValue(String s)
        Console.WriteLine(s);
    public void DisplayValue(String s, params Object[] values)
        Console.WriteLine(s, values);
    public static bool Equals(TestClass t1, TestClass t2)
        return Object.ReferenceEquals(t1, t2);
    public bool Equals(TestClass t)
        return Object.ReferenceEquals(this, t);
public class Example1
    public static void Main()
        Type t = typeof(TestClass);
        RetrieveMethod(t, "DisplayValue", BindingFlags.Public | BindingFlags.Instance);
        RetrieveMethod(t, "Equals", BindingFlags.Public | BindingFlags.Instance);
        RetrieveMethod(t, "Equals", BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly);
        RetrieveMethod(t, "Equals", BindingFlags.Public | BindingFlags.Static);
    private static void RetrieveMethod(Type t, String name, BindingFlags flags)
            MethodInfo m = t.GetMethod(name, flags);
            if (m != null)
                Console.Write("{0}.{1}(", t.Name, m.Name);
                ParameterInfo[] parms = m.GetParameters();
                for (int ctr = 0; ctr < parms.Length; ctr++)
                    Console.Write(parms[ctr].ParameterType.Name);
                    if (ctr < parms.Length - 1)
                        Console.Write(", ");
                Console.WriteLine(")");
                Console.WriteLine("Method not found");
        catch (AmbiguousMatchException)
            Console.WriteLine("The following duplicate matches were found:");
            MethodInfo[] methods = t.GetMethods(flags);
            foreach (var method in methods)
                if (method.Name != name) continue;
                Console.Write("   {0}.{1}(", t.Name, method.Name);
                ParameterInfo[] parms = method.GetParameters();
                for (int ctr = 0; ctr < parms.Length; ctr++)
                    Console.Write(parms[ctr].ParameterType.Name);
                    if (ctr < parms.Length - 1)
                        Console.Write(", ");
                Console.WriteLine(")");
        Console.WriteLine();
// The example displays the following output:
//       The following duplicate matches were found:
//          TestClass.DisplayValue(String)
//          TestClass.DisplayValue(String, Object[])
//       The following duplicate matches were found:
//          TestClass.Equals(TestClass)
//          TestClass.Equals(Object)
//       TestClass.Equals(TestClass)
//       TestClass.Equals(TestClass, TestClass)

    open System
open System.Reflection
type TestClass() =
    member _.DisplayValue(s) = 
        printfn $"%s{s}"
    member _.DisplayValue(s: string, [<ParamArray>]values: obj[]) =
        Console.WriteLine(s, values)
    member this.Equals(t: TestClass) =
        Object.ReferenceEquals(this, t)
    static member Equals(t1: TestClass, t2: TestClass) =
        Object.ReferenceEquals(t1, t2)
let retrieveMethod (t: Type) name (flags: BindingFlags) =
        let m = t.GetMethod(name, flags)
        if m <> null then
            printf $"{t.Name}.{m.Name}("
            let parms = m.GetParameters()
            for i = 0 to parms.Length - 1 do
                printf $"{parms[i].ParameterType.Name}"
                if i < parms.Length - 1 then
                    printf ", "
            printfn ")"
            printfn "Method not found"
    with :? AmbiguousMatchException ->
        printfn "The following duplicate matches were found:"
        let methods = t.GetMethods flags
        for method in methods do
            if method.Name = name then
                printf $"   {t.Name}.{method.Name}("
                let parms = method.GetParameters()
                for i = 0 to parms.Length - 1 do
                    printf $"{parms[i].ParameterType.Name}"
                    if i < parms.Length - 1 then
                        printf ", "
                printfn ")"
    printfn ""
let t = typeof<TestClass>
retrieveMethod t "DisplayValue" (BindingFlags.Public ||| BindingFlags.Instance)
retrieveMethod t "Equals" (BindingFlags.Public ||| BindingFlags.Instance)
retrieveMethod t "Equals" (BindingFlags.Public ||| BindingFlags.Instance ||| BindingFlags.DeclaredOnly)
retrieveMethod t "Equals" (BindingFlags.Public ||| BindingFlags.Static)
// The example displays the following output:
//       The following duplicate matches were found:
//          TestClass.DisplayValue(String)
//          TestClass.DisplayValue(String, Object[])
//       The following duplicate matches were found:
//          TestClass.Equals(TestClass)
//          TestClass.Equals(Object)
//       TestClass.Equals(TestClass)
//       TestClass.Equals(TestClass, TestClass)

    Imports System.Reflection
Public Class TestClass
   Public Sub DisplayValue(s As String)
      Console.WriteLine(s)
   End Sub
   Public Sub DisplayValue(s As String, ParamArray values() As Object)
      Console.WriteLine(s, values)
   End Sub
   Public Overloads Shared Function Equals(t1 As TestClass, t2 As TestClass) As Boolean
      Return Object.ReferenceEquals(t1, t2)
   End Function
   Public Overloads Function Equals(t As TestClass) As Boolean
      Return Object.ReferenceEquals(Me, t)
   End Function          
End Class
Module Example
   Public Sub Main()
      Dim t As Type = GetType(TestClass)
      RetrieveMethod(t, "DisplayValue", BindingFlags.Public Or BindingFlags.Instance)
      RetrieveMethod(t, "Equals", BindingFlags.Public Or BindingFlags.Instance)
      RetrieveMethod(t, "Equals", BindingFlags.Public Or BindingFlags.Instance Or BindingFlags.DeclaredOnly)
      RetrieveMethod(t, "Equals", BindingFlags.Public Or BindingFlags.Static)
   End Sub
   Public Sub RetrieveMethod(t As Type, name As String, flags As BindingFlags)
         Dim m As MethodInfo = t.GetMethod(name, flags)
         If m IsNot Nothing Then
            Console.Write("{0}.{1}(", t.Name, m.Name)
           Dim parms() As ParameterInfo = m.GetParameters()
            For ctr As Integer = 0 To parms.Length - 1
               Console.Write(parms(ctr).ParameterType.Name)
               if ctr < parms.Length - 1 Then 
                  Console.Write(", ")
               End If      
            Console.WriteLine(")")
            Console.WriteLine("Method not found")
         End If
      Catch e As AmbiguousMatchException
         Console.WriteLine("The following duplicate matches were found:")
         Dim methods() As MethodInfo = t.GetMethods(flags)
         For Each method In methods
            If method.Name <> name Then Continue For
            Console.Write("   {0}.{1}(", t.Name, method.Name)
            Dim parms() As ParameterInfo = method.GetParameters()
            For ctr As Integer = 0 To parms.Length - 1
               Console.Write(parms(ctr).ParameterType.Name)
               if ctr < parms.Length - 1 Then 
                  Console.Write(", ")
               End If      
            Console.WriteLine(")")
      End Try         
      Console.WriteLine()
   End Sub
End Module
' The example displays the following output:
'       The following duplicate matches were found:
'          TestClass.DisplayValue(String)
'          TestClass.DisplayValue(String, Object[])
'       The following duplicate matches were found:
'          TestClass.Equals(TestClass)
'          TestClass.Equals(Object)
'       TestClass.Equals(TestClass)
'       TestClass.Equals(TestClass, TestClass)

    You can do one of the following to retrieve a specific method:
    

  • Change the binding constraints. In the previous example, attempting to retrieve a public instance Equals method that is declared by the type and not inherited successfully retrieves Equals(TestClass).
    

  • Call an overload of the GetMethod method that includes a types parameter which defines the types of the method's parameters.
    

  • Call the GetMethods(BindingFlags) method to retrieve an array containing all of the methods belonging to a type that have the specified binding attributes. You can then iterate it to identify the duplicate methods named name. This approach is illustrated in the previous example's handler for the AmbiguousMatchException exception.
    

    If the current Type represents a constructed generic type, this method returns the MethodInfo with the type parameters replaced by the appropriate type arguments.
    

    If the current Type represents a type parameter in the definition of a generic type or generic method, this method searches the methods of the class constraint, or the methods of Object if there is no class constraint.
    

    For generic methods, do not include the type arguments in name. For example, the C# code GetMember("MyMethod<int>") searches for a member with the text name "MyMethod<int>", rather than for a method named MyMethod that has one generic argument of type int.
    

  • BindingFlags
    • 

  • DefaultBinder
    • 

  • GetMethodImpl(String, BindingFlags, Binder, CallingConventions, Type[], ParameterModifier[])
    • 

  • GetMethods()
    • 
  
    Applies to
    
	
    public:
 System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, System::Reflection::BindingFlags bindingAttr, cli::array <Type ^> ^ types);
    
	
    public System.Reflection.MethodInfo? GetMethod (string name, System.Reflection.BindingFlags bindingAttr, Type[] types);
    
	
    member this.GetMethod : string * System.Reflection.BindingFlags * Type[] -> System.Reflection.MethodInfo
    
	
    Public Function GetMethod (name As String, bindingAttr As BindingFlags, types As Type()) As MethodInfo
    
	
    Parameters
    
		
    A bitwise combination of the enumeration values that specify how the search is conducted.
-or- Default to return null.
    
		
    An array of Type objects representing the number, order, and type of the parameters for the method to get.
-or- An empty array of Type objects (as provided by the EmptyTypes field) to get a method that takes no parameters.
    
	
    Returns
    
	
    public:
 System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, int genericParameterCount, cli::array <Type ^> ^ types);
    
	
    public System.Reflection.MethodInfo? GetMethod (string name, int genericParameterCount, Type[] types);
    
	
    public System.Reflection.MethodInfo GetMethod (string name, int genericParameterCount, Type[] types);
    
	
    member this.GetMethod : string * int * Type[] -> System.Reflection.MethodInfo
    
	
    Public Function GetMethod (name As String, genericParameterCount As Integer, types As Type()) As MethodInfo
    
	
    Parameters
    
		
    An array of Type objects representing the number, order, and type of the parameters for the method to get.
    

    An empty array of Type objects (as provided by the EmptyTypes field) to get a method that takes no parameters.




    

    
	
    Returns
    
	
    public:
 System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, cli::array <Type ^> ^ types);
    
	
    public:
 virtual System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, cli::array <Type ^> ^ types);
    
	
    public System.Reflection.MethodInfo? GetMethod (string name, Type[] types);
    
	
    public System.Reflection.MethodInfo GetMethod (string name, Type[] types);
    
	
    member this.GetMethod : string * Type[] -> System.Reflection.MethodInfo
    
	
    abstract member GetMethod : string * Type[] -> System.Reflection.MethodInfo
override this.GetMethod : string * Type[] -> System.Reflection.MethodInfo
    
	
    Public Function GetMethod (name As String, types As Type()) As MethodInfo
    
	
    Parameters
    
		
    An array of Type objects representing the number, order, and type of the parameters for the method to get.
    

    An empty array of Type objects (as provided by the EmptyTypes field) to get a method that takes no parameters.
    
	
    Returns
    
	
    An object representing the public method whose parameters match the specified argument types, if found; otherwise, null.
    
	
    Implements
    
						GetMethod(String, Type[])
  
    Examples
    
    	
    The following example finds specific overloads of MethodA, specifying a variety of argument types.
    

    The Visual C# 2005 example requires the /unsafe compiler option.
    

    using namespace System;
using namespace System::Reflection;
public ref class Program
public:
    // Methods to get:
    void MethodA(int i, int j) { }
    void MethodA(array<int>^ iarry) { }
    void MethodA(double *ip) { }
    // Method that takes a managed reference parameter.
    void MethodA(int% r) {}
int main()
    MethodInfo^ mInfo;
    // Get MethodA(int i, int j)
    mInfo = Program::typeid->GetMethod("MethodA", gcnew array<Type^> {int::typeid,int::typeid});
    Console::WriteLine("Found method: {0}", mInfo );
    // Get MethodA(array<int>^ iarry)
    mInfo = Program::typeid->GetMethod("MethodA", gcnew array<Type^> {int::typeid->MakeArrayType()});
    Console::WriteLine("Found method: {0}", mInfo );
    // Get MethodA(double *ip)
    mInfo = Program::typeid->GetMethod("MethodA", gcnew array<Type^> {double::typeid->MakePointerType()});
    Console::WriteLine("Found method: {0}", mInfo );
    // Get MethodA(int% r)
    mInfo = Program::typeid->GetMethod("MethodA", gcnew array<Type^> {int::typeid->MakeByRefType()});
    // Display the method information.
    Console::WriteLine("Found method: {0}", mInfo );
using System;
using System.Reflection;
class Program4
    // Methods to get:
    public void MethodA(int i, int j) { }
    public void MethodA(int[] i) { }
    public unsafe void MethodA(int* i) { }
    public void MethodA(ref int r) {}
    // Method that takes an out parameter:
    public void MethodA(int i, out int o) { o = 100;}
  static void Main(string[] args)
    MethodInfo mInfo;
    // Get MethodA(int i, int i)
    mInfo = typeof(Program).GetMethod("MethodA",
        new Type[] { typeof(int), typeof(int) });
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(int[] i)
    mInfo = typeof(Program).GetMethod("MethodA",
        new Type[] { typeof(int[]) });
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(int* i)
    mInfo = typeof(Program).GetMethod("MethodA",
        new Type[] { typeof(int).MakePointerType() });
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(ref int r)
    mInfo = typeof(Program).GetMethod("MethodA",
        new Type[] { typeof(int).MakeByRefType() });
    Console.WriteLine("Found method: {0}", mInfo);
    // Get MethodA(int i, out int o)
    mInfo = typeof(Program).GetMethod("MethodA",
        new Type[] { typeof(int), typeof(int).MakeByRefType() });
    Console.WriteLine("Found method: {0}", mInfo);

    type Program() =
    // Methods to get:
    member _.MethodA(i: int, j: int) = ()
    member _.MethodA(i: int[]) = ()
    member _.MethodA(i: int nativeptr) = ()
    member _.MethodA(r: int byref) = ()
    // Method that takes an outref parameter:
    member _.MethodA(i: int, o: int outref) = o <- 100
    // member MethodA: i: int * j: int -> unit
    let mInfo = typeof<Program>.GetMethod("MethodA", [| typeof<int>; typeof<int> |])
    printfn $"Found method: {mInfo}"
    // member MethodA: i: int[] -> unit
    let mInfo = typeof<Program>.GetMethod("MethodA", [| typeof<int[]> |])
    printfn $"Found method: {mInfo}"
    // member MethodA: i: nativeptr<int> -> unit
    let mInfo = typeof<Program>.GetMethod("MethodA", [| typeof<int>.MakePointerType() |])
    printfn $"Found method: {mInfo}"
    // member MethodA: r: byref<int> -> unit
    let mInfo = typeof<Program>.GetMethod("MethodA", [| typeof<int>.MakeByRefType() |])
    printfn $"Found method: {mInfo}"
    // member MethodA: i: int * o: outref<int> -> unit
    let mInfo = typeof<Program>.GetMethod("MethodA", [| typeof<int>; typeof<int>.MakeByRefType() |])
    printfn $"Found method: {mInfo}"
Imports System.Reflection
Imports System.Runtime.InteropServices
Class Program
    ' Methods to get:
    Public Overloads Sub MethodA(ByVal i As Integer, ByVal l As Long)
    End Sub
    Public Overloads Sub MethodA(ByVal i() As Integer)
    End Sub
    Public Overloads Sub MethodA(ByRef r As Integer)
    End Sub
    ' Method that takes an out parameter. Note that an Imports
    ' reference is needed to System.Runtime.InteropServices 
    ' for the <OutAttribute>, which can be shortened to <Out>.
    Public Overloads Sub MethodA(ByVal i As Integer, <Out()> ByRef o As Integer)
        o = 100
    End Sub
    Public Shared Sub Main(ByVal args() As String)
        Dim mInfo As MethodInfo
        ' Get MethodA(i As Integer i, l As Long)
        mInfo = GetType(Program).GetMethod("MethodA", New Type() {GetType(Integer), GetType(Long)})
        Console.WriteLine("Found method: {0}", mInfo)
        ' Get  MethodA(i As Integer())
        mInfo = GetType(Program).GetMethod("MethodA", New Type() {GetType(Integer())})
        Console.WriteLine("Found method: {0}", mInfo)
        ' Get MethodA(ByRef r As Integer)
        mInfo = GetType(Program).GetMethod("MethodA", New Type() {GetType(Integer).MakeByRefType})
        Console.WriteLine("Found method: {0}", mInfo)
        ' Get MethodA(i As Integer, ByRef r As Integer)
        mInfo = GetType(Program).GetMethod("MethodA", New Type() {GetType(Integer), _
            GetType(Integer).MakeByRefType})
        Console.WriteLine("Found method: {0}", mInfo)
    End Sub
End Class

    The following example retrieves MethodInfo objects that represent the Add methods  of a non-generic type (the ArrayList class), an open generic type (the List<T> class), and a closed generic type (the List(Of String) type.
    

    using System;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;
public class Example
   public static void Main()
      // Get a Type object that represents a non-generic type.
      GetAddMethod(typeof(ArrayList));
      var list = new List<String>();
      // Get a Type object that represents a constructed generic type.
      Type closed = list.GetType();
      GetAddMethod(closed);
      // Get a Type object that represents an open generic type.
      Type open = typeof(List<>);
      GetAddMethod(open);
   private static void GetAddMethod(Type typ)
      MethodInfo method;
      // Determine if this is a generic type.
      if (typ.IsGenericType) {
         // Is it an open generic type?
         if (typ.ContainsGenericParameters)
            method = typ.GetMethod("Add", typ.GetGenericArguments());
         // Get closed generic type arguments.
            method = typ.GetMethod("Add", typ.GenericTypeArguments);
      // This is not a generic type.
      else {
         method = typ.GetMethod("Add", new Type[] { typeof(Object) } );
      // Test if an Add method was found.
      if (method == null) { 
         Console.WriteLine("No Add method found.");
         return;
      Type t = method.ReflectedType;
      Console.Write("{0}.{1}.{2}(", t.Namespace, t.Name, method.Name);
      ParameterInfo[] parms = method.GetParameters();
      for (int ctr = 0; ctr < parms.Length; ctr++)
         Console.Write("{0}{1}", parms[ctr].ParameterType.Name, 
                       ctr < parms.Length - 1 ? ", " : "");
      Console.WriteLine(")");
// The example displays the following output:
//       System.Collections.ArrayList.Add(Object)
//       System.Collections.Generic.List`1.Add(String)
//       System.Collections.Generic.List`1.Add(T)

    open System
open System.Collections
let getAddMethod (typ: Type) = 
    let method = 
        // Determine if this is a generic type.
        if typ.IsGenericType then
            // Is it an open generic type?
            if typ.ContainsGenericParameters then
                typ.GetMethod("Add", typ.GetGenericArguments())
            // Get closed generic type arguments.
                typ.GetMethod("Add", typ.GenericTypeArguments)
        // This is not a generic type.
            typ.GetMethod("Add", [| typeof<obj> |])
    // Test if an Add method was found.
    if method = null then
        printfn "No Add method found."
        let t = method.ReflectedType
        printf $"{t.Namespace}.{t.Name}.{method.Name}("
        let parms = method.GetParameters()
        for i = 0 to parms.Length - 1 do
            printf $"""{parms[i].ParameterType.Name}{if i < parms.Length - 1 then ", " else ""}"""
        printfn ")"
// Get a Type object that represents a non-generic type.
getAddMethod typeof<ArrayList>
let list = ResizeArray<String>()
// Get a Type object that represents a constructed generic type.
let closed = list.GetType()
getAddMethod closed
// Get a Type object that represents an open generic type.
let opn = typeof<ResizeArray<_>>.GetGenericTypeDefinition()
getAddMethod opn
// The example displays the following output:
//       System.Collections.ArrayList.Add(Object)
//       System.Collections.Generic.List`1.Add(String)
//       System.Collections.Generic.List`1.Add(T)

    Imports System.Collections
Imports System.Collections.Generic
Imports System.Reflection
Module Example
   Public Sub Main()
      ' Get a Type object that represents a non-generic type.
      GetAddMethod(GetType(ArrayList))
      Dim list As New List(Of String)()
      ' Get a Type object that represents a constructed generic type.
      Dim closed As Type = list.GetType()
      GetAddMethod(closed)
      ' Get a Type object that represents an open generic type.
      Dim open As Type = GetType(List(Of))
      GetAddMethod(open)
   End Sub
   Private Sub GetAddMethod(typ As Type)
      Dim method As MethodInfo
      ' Determine if this is a generic type.
      If typ.IsGenericType Then
         ' Is it an open generic type?
         If typ.ContainsGenericParameters Then
            method = typ.GetMethod("Add", typ.GetGenericArguments())
         ' Get closed generic type arguments.
            method = typ.GetMethod("Add", typ.GenericTypeArguments)
         End If
      ' This is not a generic type.
         method = typ.GetMethod("Add", { GetType(Object) } )
      End If
      ' Test if an Add method was found.
      If method Is Nothing Then 
         Console.WriteLine("No Add method found.")
         Exit Sub
      End If   
      Dim t As Type = method.ReflectedType
      Console.Write("{0}.{1}.{2}(", t.Namespace, t.Name, method.Name)
      Dim params() As ParameterInfo = method.GetParameters()
      For ctr As Integer = 0 To params.Length - 1
         Console.Write("{0}{1}", params(ctr).ParameterType.Name, 
                       If(ctr < params.Length - 1, ", ", ""))
      Console.WriteLine(")")
   End Sub
End Module
' The example displays the following output:
'       System.Collections.ArrayList.Add(Object)
'       System.Collections.Generic.List`1.Add(String)
'       System.Collections.Generic.List`1.Add(T)

    The example defines a GetAddMethod method that retrieves the appropriate MethodInfo object. To provide the types argument for an open generic type, it calls the Type.GetGenericArguments method. To provide the types argument for a closed generic type, it retrieves the value of the Type.GenericTypeArguments property.
    
    	
    Remarks
    
    	
    The search for name is case-sensitive. The search includes public static and public instance methods.
    

    You cannot omit parameters when looking up constructors and methods. You can only omit parameters when invoking.
    

    If the current Type represents a constructed generic type, this method returns the MethodInfo with the type parameters replaced by the appropriate type arguments.
    

    If the current Type represents a type parameter in the definition of a generic type or generic method, this method searches the methods of the class constraint, or the methods of Object if there is no class constraint.
    

    The name parameter cannot include type arguments. For example, the C# code GetMethod("MyGenericMethod<int>") searches for a method with the text name "MyGenericMethod<int>", rather than for a method named MyGenericMethod that has one generic argument of type int. Instead, use GetMethod("MyGenericMethod") with the appropriate parameter in the types array.
    

  • MethodInfo
    • 

  • DefaultBinder
    • 

  • GetMethodImpl(String, BindingFlags, Binder, CallingConventions, Type[], ParameterModifier[])
    • 

  • GetMethods()
    • 
  
    Applies to
    
 System::Reflection::MethodInfo ^ GetMethod(System::String ^ name);
    
	
    public:
 virtual System::Reflection::MethodInfo ^ GetMethod(System::String ^ name);
    
	
    public System.Reflection.MethodInfo? GetMethod (string name);
    
	
    public System.Reflection.MethodInfo GetMethod (string name);
    
	
    member this.GetMethod : string -> System.Reflection.MethodInfo
    
	
    abstract member GetMethod : string -> System.Reflection.MethodInfo
override this.GetMethod : string -> System.Reflection.MethodInfo
    
	
    Public Function GetMethod (name As String) As MethodInfo
    
	
    Parameters
    
	
    An object that represents the public method with the specified name, if found; otherwise, null.




    

    
	
    Implements
    
						GetMethod(String)
    	
    The following example gets a method named MethodA.
    

    using namespace System;
using namespace System::Reflection;
public ref class Program
    public:
        // Method to get:
        void MethodA() { }
    int main()
        // Get MethodA()
        MethodInfo^ mInfo = Program::typeid->GetMethod("MethodA");
        Console::WriteLine("Found method: {0}", mInfo );
using System;
using System.Reflection;
class Program
    // Method to get:
    public void MethodA() { }
    static void Main(string[] args)
        // Get MethodA()
        MethodInfo mInfo = typeof(Program).GetMethod("MethodA");
        Console.WriteLine("Found method: {0}", mInfo);

    type Program() =
    // Method to get:
    member _.MethodA() = ()
// Get MethodA()
let mInfo = typeof<Program>.GetMethod "MethodA"
printfn $"Found method: {mInfo}"
Imports System.Reflection
Class Program
    ' Method to get:
    Public Sub MethodA()
    End Sub
    Public Shared Sub Main(ByVal args() As String)
        ' Get MethodA()
        Dim mInfo As MethodInfo = GetType(Program).GetMethod("MethodA")
        Console.WriteLine("Found method: {0}", mInfo)
    End Sub
End Class
    	
    Remarks
    
    	
    The search for name is case-sensitive. The search includes public static and public instance methods.
    

    If a method is overloaded and has more than one public method, the GetMethod(String) method throws an AmbiguousMatchException exception. In the following example, an exception is thrown because there is more than one public overload of the Int32.ToString method.  On the other hand, because the Person.ToString method overrides  Object.ToString and therefore is not overloaded, the GetMethod(String) method is able to retrieve the MethodInfo object.
    

    using System;
using System.Reflection;
public class Person
    public String FirstName;
    public String LastName;
    public override String ToString()
        return (FirstName + " " + LastName).Trim();
public class Example2
    public static void Main()
        Type t = typeof(Person);
        RetrieveMethod(t, "ToString");
        t = typeof(Int32);
        RetrieveMethod(t, "ToString");
    private static void RetrieveMethod(Type t, String name)
            MethodInfo m = t.GetMethod(name);
            if (m != null)
                Console.WriteLine("{0}.{1}: {2} method", m.ReflectedType.Name,
                                  m.Name, m.IsStatic ? "Static" : "Instance");
                Console.WriteLine("{0}.ToString method not found", t.Name);
        catch (AmbiguousMatchException)
            Console.WriteLine("{0}.{1} has multiple public overloads.",
                              t.Name, name);
// The example displays the following output:
//       Person.ToString: Instance method
//       Int32.ToString has multiple public overloads.

    open System
open System.Reflection
type Person() =
    member val FirstName = "" with get, set
    member val LastName = "" with get, set
    override this.ToString() =
        (this.FirstName + " " + this.LastName).Trim()
let retrieveMethod (t: Type) name =
        let m = t.GetMethod name
        if m <> null then
            printfn $"""{m.ReflectedType.Name}.{m.Name}: {if m.IsStatic then "Static" else "Instance"} method"""
            printfn $"{t.Name}.ToString method not found"
    with :? AmbiguousMatchException ->
        printfn $"{t.Name}.{name} has multiple public overloads."
let t = typeof<Person>
retrieveMethod t "ToString"
let t2 = typeof<int>
retrieveMethod t2 "ToString"
// The example displays the following output:
//       Person.ToString: Instance method
//       Int32.ToString has multiple public overloads.

    Imports System.Reflection
Public Class Person
   Public FirstName As String
   Public LastName As String
   Public Overrides Function ToString() As String
      Return (FirstName + " " + LastName).Trim()
   End Function
End Class
Module Example
   Public Sub Main()
      Dim t As Type = GetType(Person)
      RetrieveMethod(t, "ToString")
      t = GetType(Int32)
      RetrieveMethod(t, "ToString")
   End Sub
   Private Sub RetrieveMethod(t As Type, name As String)   
         Dim m As MethodInfo = t.GetMethod(name)
         If m IsNot Nothing Then
            Console.WriteLine("{0}.{1}: {2} method", m.ReflectedType.Name,
                              m.Name, If(m.IsStatic, "Static", "Instance"))    
            Console.WriteLine("{0}.ToString method not found", t.Name)
         End If   
      Catch e As AmbiguousMatchException
         Console.WriteLine("{0}.{1} has multiple public overloads.", 
                           t.Name, name)
      End Try
   End Sub
End Module
' The example displays the following output:
'       Person.ToString: Instance method
'       Int32.ToString has multiple public overloads.

    You can do one of the following to retrieve a specific method:
    

  • Call the GetMethod(String, BindingFlags) method and specify a bindingAttr argument that uniquely identifies the method. For example, if the exception is thrown because a type has a static and an instance overload, you can specify a  bindingAttr argument  of BindingFlags.InstanceOrBindingFlags.Instance.
    

  • Call an overload of the GetMethod method that includes a types parameter which defines the types of the method's parameters.
    

  • Call the GetMethods() method to retrieve an array containing all of the public methods belonging to a type. You can then iterate it to identify the duplicate methods named name.
    

    If the current Type represents a constructed generic type, this method returns the MethodInfo with the type parameters replaced by the appropriate type arguments.
    

    If the current Type represents a type parameter in the definition of a generic type or generic method, this method searches the methods of the class constraint, or the methods of Object if there is no class constraint.
    

    For generic methods, do not include the type arguments in name. For example, the C# code GetMember("MyMethod<int>") searches for a member with the text name "MyMethod<int>", rather than for a method named MyMethod that has one generic argument of type int.
    

  • String
    • 

  • DefaultBinder
    • 

  • GetMethodImpl(String, BindingFlags, Binder, CallingConventions, Type[], ParameterModifier[])
    • 

  • GetMethods()
    • 
  
    Applies to
    
	
    public:
 System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, cli::array <Type ^> ^ types, cli::array <System::Reflection::ParameterModifier> ^ modifiers);
    
	
    public:
 virtual System::Reflection::MethodInfo ^ GetMethod(System::String ^ name, cli::array <Type ^> ^ types, cli::array <System::Reflection::ParameterModifier> ^ modifiers);
    
	
    public System.Reflection.MethodInfo? GetMethod (string name, Type[] types, System.Reflection.ParameterModifier[]? modifiers);
    
	
    public System.Reflection.MethodInfo GetMethod (string name, Type[] types, System.Reflection.ParameterModifier[] modifiers);
    
	
    member this.GetMethod : string * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.MethodInfo
    
	
    abstract member GetMethod : string * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.MethodInfo
override this.GetMethod : string * Type[] * System.Reflection.ParameterModifier[] -> System.Reflection.MethodInfo
    
	
    Public Function GetMethod (name As String, types As Type(), modifiers As ParameterModifier()) As MethodInfo
    
	
    Parameters
    
		
    An array of Type objects representing the number, order, and type of the parameters for the method to get.
    

    An empty array of Type objects (as provided by the EmptyTypes field) to get a method that takes no parameters.
    
		
    An array of ParameterModifier objects representing the attributes associated with the corresponding element in the types array. To be only used when calling through COM interop, and only parameters that are passed by reference are handled. The default binder does not process this parameter.
    
	
    Returns
    
	
    An object representing the public method that matches the specified requirements, if found; otherwise, null.
    
	
    Implements
    
						GetMethod(String, Type[], ParameterModifier[])
    	
    Remarks
    
    	
    Although the default binder does not process ParameterModifier (the modifiers parameter), you can use the abstract System.Reflection.Binder class to write a custom binder that does process modifiers. ParameterModifier is only used when calling through COM interop, and only parameters that are passed by reference are handled.
    

    The search for name is case-sensitive. The search includes public static and public instance methods.
    

    You cannot omit parameters when looking up constructors and methods. You can only omit parameters when invoking.
    

    If the current Type represents a constructed generic type, this method returns the MethodInfo with the type parameters replaced by the appropriate type arguments.
    

    If the current Type represents a type parameter in the definition of a generic type or generic method, this method searches the methods of the class constraint, or the methods of Object if there is no class constraint.
    

    For generic methods, do not include the type arguments in name. For example, the C# code GetMethod("MyMethod<int>") searches for a member with the text name "MyMethod<int>", rather than for a method named MyMethod that has one generic argument of type int. Instead, use GetMethod("MyMethod") with the appropriate parameter in the types array.
    

  • DefaultBinder
    • 

  • ParameterModifier
    • 

  • GetMethodImpl(String, BindingFlags, Binder, CallingConventions, Type[], ParameterModifier[])
    • 

  • GetMethods()
    • 
  
    Applies to
    •  
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