C# WPF 实现Tab页动态增减
概述
Tab页面是一个很常用的控件,针对页面固定的场景,直接给Item进行数据绑定就行,如下所示:
<dx:DXTabControl cal:Message.Attach="[Event Loaded]=[TabControl_Loaded($source,$eventArgs)]">
<dx:DXTabItem Header="{Binding Region[0]}" Visibility="{Binding TabPageDispaly[0]}">
<ContentControl cal:View.Model="{Binding ParamPage}" />
</dx:DXTabItem>
<dx:DXTabItem Header="{Binding Region[1]}" Visibility="{Binding TabPageDispaly[1]}">
<ContentControl cal:View.Model="{Binding ParamPage}"/>
</dx:DXTabItem>
<dx:DXTabItem Header="{Binding Region[2]}" Visibility="{Binding TabPageDispaly[2]}">
<ContentControl cal:View.Model="{Binding ParamPage}"/>
</dx:DXTabItem>
</dx:DXTabControl>
但是针对页面需要动态增减的场景,这种方法就不再适用了,下面就针对这种情况进行讲解.
数据定义
[AddINotifyPropertyChangedInterface]
public class UserInfos
/// <summary>
/// Header
/// </summary>
public int Header { get; set; }
/// <summary>
/// 姓名
/// </summary>
public string UserName { get; set; }
public EventAggregatorViewModel EventAggregatorViewModel { get; set; }
}
这里定义了一个标题Header ,用户名UserName ,以及另外个ViewModel类
数据集合定义:
public BindableCollection<UserInfos> UserInformationList { get; set; }
逻辑实现
后台实现-数据添加:这里有几个页面就add几组数据 UserInformationList = new BindableCollection<UserInfos>(); UserInformationList.Add(new UserInfos() Header = 1, UserName = "张三", EventAggregatorViewModel = new EventAggregatorViewModel() UserInformationList.Add(new UserInfos() Header = 2, UserName = "李四", EventAggregatorViewModel = new EventAggregatorViewModel() UserInformationList.Add(new UserInfos() Header = 3, UserName = "王五", EventAggregatorViewModel = new EventAggregatorViewModel() catch (Exception ex) MessageBox.Show($"{ex}"); }
item删除:这里通过前台绑定事件实现
public void RemoveItem(object dataContext)
var buttonContext = dataContext as SimpleButton;
var item = buttonContext.DataContext as UserInfos;
loginfo.Debug($"Enter [RemoveItem] Header = [{item.Header}]");
UserInformationList.Remove(item);
loginfo.Debug($"Leave [RemoveItem].");
}
前台XAML:这里标题和Item信息都通过模板实现
<dx:DXTabControl ItemsSource="{Binding UserInformationList}">
<dx:DXTabControl.ItemHeaderTemplate>
<DataTemplate>
<dxlc:LayoutItem Label="{Binding UserName}">
<dx:SimpleButton
Margin="5,0,0,0"
cal:Message.Attach="[Event Click] = [Action RemoveItem($source)]"
Content="×" />
</dxlc:LayoutItem>
</DataTemplate>
</dx:DXTabControl.ItemHeaderTemplate>