问 使用EPPlus创建复选框下拉列表

EN

您可以使用：

var validationCell = sheet.DataValidations.AddListValidation("A1");
validationCell.Formula.Values.Add("a");
validationCell.Formula.Values.Add("b");
validationCell.Formula.Values.Add("c");
...

但您只能选择一个值。我认为excel不支持多个值。

对于其他人的参考，下面是我如何启用多个值选择：

通过插入VBA代码：

查看如何在 here 中执行此操作，使用EPPlus时，您可以使用以下命令插入VBA代码：

package.Workbook.CreateVBAProject();
worksheet.CodeModule.Code = code;

下面的代码做到了这一点：

using (var package = new ExcelPackage(new System.IO.FileInfo("D:\\b.xlsm")))
            ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("11");
            var validationCell = worksheet.DataValidations.AddListValidation("A1");
            validationCell.Formula.Values.Add("a");
            validationCell.Formula.Values.Add("b");
            validationCell.Formula.Values.Add("c");
            string code = "Private Sub Worksheet_Change(ByVal Target As Range)\n" +
"Dim Oldvalue As String\n" +
"Dim Newvalue As String\n" +
"Application.EnableEvents = True\n" +
"On Error GoTo Exitsub\n" +
"If Target.Address = \"$A$1\" Then\n" +
 " If Target.SpecialCells(xlCellTypeAllValidation) Is Nothing Then\n" +
  "  GoTo Exitsub\n" +
  "Else: If Target.Value = \"\" Then GoTo Exitsub Else\n" +
   " Application.EnableEvents = False\n" +
    "Newvalue = Target.Value\n" +
    "Application.Undo\n" +
    "Oldvalue = Target.Value\n" +
    "  If Oldvalue = \"\" Then\n" +
     "   Target.Value = Newvalue\n" +
      "Else\n" +
       " If InStr(1, Oldvalue, Newvalue) = 0 Then\n" +
        "    Target.Value = Oldvalue & \", \" & Newvalue\n" +
      "Else: \n" +
       "         Target.Value = Oldvalue\n" +
      "End If\n" +
    "End If\n" +
  "End If\n" +
 "End If\n" +
"Application.EnableEvents = True\n" +
"Exitsub: \n" +
 "  Application.EnableEvents = True\n" +