Delegate declaration in C#

To convert a method to a compatible delegate, you need to do three things:

1. Insert the keyword 'delegate' immediately before the return type of the method.

2. Change the name of the method to a suitable name for the delegate.

3. Add a semicolon at the end of the delegate's signature.

You can also optionally:

4. Change the delegate's accessibility (public, internal etc) but it must be at least as accessible as the methods you want to call through it.

5. Change the names of the parameters (if any) but not the types of those parameters or the return type.

Here's an example using the method defined in your post:

using System;

public delegate int sayDelegate(int i, Single j);

class student

{

public int say(int i, Single j)

{

return i + (int)j;

}

class Test

{

static void Main()

{

student s = new student();

sayDelegate del = s.say;

int i = 1;

Single j = 2.0f;

Console.WriteLine("{0} + {1} = {2}", i, j, del(i, j));

Console.ReadKey();

}

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