What are multicast delegates ? give me an example

Question Posted / kirti

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What are multicast delegates ? give me an example..

Answer / kirti

Delegate that can have more than one element in its invocation List.

using System;

namespace SampleMultiCastDelegate

{

class MultiCast

{

public delegate string strMultiCast(string s);

}

}

MainClass defines the static methods having same signature as delegate.

using System;

namespace SampleMultiCastDelegate

{

public class MainClass

{

public MainClass()

{

}

public static string Jump(string s)

{

Console.WriteLine("Jump");

return String.Empty;

}

public static string Run(string s)

{

Console.WriteLine("Run");

return String.Empty;

}

public static string Walk(string s)

{

Console.WriteLine("Walk");

return String.Empty;

}

}

}

The Main class:

using System;

using System.Threading;

namespace SampleMultiCastDelegate

{

public class MainMultiCastDelegate

{

public static void Main()

{

MultiCast.strMultiCast Run,Walk,Jump;

MultiCast.strMultiCast myDelegate;

///here mydelegate used the Combine method of System.MulticastDelegate

///and the delegates combine

myDelegate=(MultiCast.strMultiCast)System.Delegate.Combine(Run,Walk);

}

}

}