Action (of T) Delegate

This function is similar to action, but the parameter input function is added.

Use delegateCode:

Using System;
Using System. Windows. forms;

Public Delegate VoidDisplaymessage (StringMessage );

Public Class Testtestdelegate
{
Public Static Void Main ()
{
Displaymessage showmethod = displaytowindow;
Showmethod ( " Zhangps " );
}
Public Static Void Displaytowindow ( String Strname)
{
MessageBox. Show ( " Antiquity way: Hello world, " + Strname );
}
}

Action <of T> code:

Using System;
Using System. Windows. forms;

Public Class Testtestdelegate
{
Public Static Void Main ()
{
Action < String > Showmethod = displaytowindow;
Showmethod ( " Zhangps " );
}
Public Static Void Displaytowindow ( String Strname)
{
MessageBox. Show ( " Action way: Hello world, " + Strname );
}

}

More concise method:

Using System;

UsingSystem. Windows. forms;

Public class testtestdelegate
{< br> Public static void main ()
{< br> action string showmethod = s =>{ MessageBox. show ( " action way: Hello world, " + S) ;};
showmethod (" zhangps " );
}< BR >}

The method passed as the parameter (
Delegate, pointer similar to C ++): 

Using System;
Using System. Windows. forms;

Public Delegate VoidDisplaymessage (StringMessage );

Public Class Testtestdelegate
{
Public Static Void Main ()
{
Invokedispaly (displaytowindow );
}
Public Static Void Invokedispaly (displaymessage delegateargs)
{
Delegateargs (" Zhangps " );
}
Public Static Void Displaytowindow ( String Strname)
{
MessageBox. Show ( " Delegate Param way: Hello world, " + Strname );
}
}

Reference: http://msdn.microsoft.com/zh-cn/library/018hxwa8.aspx