List<T>.ForEach Method

Parameters

• action
  Type: System.Action<T>
  The Action<T> delegate to perform on each element of the List<T>.

Imports System.Collections.Generic

Class Example
   Private Shared outputBlock As System.Windows.Controls.TextBlock
   Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)

      Example.outputBlock = outputBlock
      Dim names As New List(Of String)
      names.Add("Bruce")
      names.Add("Alfred")
      names.Add("Tim")
      names.Add("Richard")

      ' Display the contents of the list using the Print method.
      names.ForEach(AddressOf Print)
   End Sub

   Shared Sub Print(ByVal s As String)
      outputBlock.Text &= s & vbCrLf
   End Sub
End Class

' This code will produce output similar to the following:
' Bruce
' Alfred
' Tim
' Richard

using System;
using System.Collections.Generic;

class Example
{
   private static System.Windows.Controls.TextBlock outputBlock;

   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {

      Example.outputBlock = outputBlock;
      List<String> names = new List<String>();
      names.Add("Bruce");
      names.Add("Alfred");
      names.Add("Tim");
      names.Add("Richard");

      // Display the contents of the list using the Print method.
      names.ForEach(Print);

      // The following demonstrates the anonymous method feature of C#
      // to display the contents of the list.
      names.ForEach(delegate(String name)
      {
         outputBlock.Text += name + "\n";
      });
   }

   private static void Print(string s)
   {
      outputBlock.Text += s + "\n";
   }
}
/* This code will produce output similar to the following:
 * Bruce
 * Alfred
 * Tim
 * Richard
 * Bruce
 * Alfred
 * Tim
 * Richard
 */