C # Delegate Chapter

{
Defines a delegate type, if the passed method has parameters here must be called, because the invocation of the delegate will be used when the
delegate int Adddel (int a, int b);
delegate int AddDel2 (int a, int b);
static void Main (string[] args)
{
#region the ordinary delegate
Calling a static method
Adddel del = new Adddel (ADDSTATICFUNC); Adddel del=addstaticfunc--can write like this.
Console.WriteLine (Del (1, 2));

Invoking instance methods
AddDel2 Del2 = new AddDel2 (new program (). ADDINSTANSFUNC);
Console.WriteLine (Del2 (3, 4));

Console.readkey ();
#endregion

#region Generic Delegate
Func<int, int, int> func =addstaticfunc; -Note that when a delegate specifies a method, it can be specified in the new delegate (the method name) or directly as the current specified
A lambda expression, a lambda statement, an anonymous method can be used wherever a delegate specifies a method.
Func<int, int, int> func = new func<int, int, int> ((A, B) + A + b);----lambda expression
Func<int, int, int> func = new func<int, int, int> (delegate (int a, int b) {return a + B;}); ---anonymous methods
Func<int, int, int> func = (int a, int b) + = {return a + B;};//Note that when you write a lambda expression () {} You can omit the case where there is only one variable or one statement inside it.

Console.WriteLine (Func (1, 3));
Console.readkey ();
#endregion

}
<summary>
Static methods
</summary>
<param name= "a" ></param>
<param name= "B" ></param>
<returns></returns>
static int Addstaticfunc (int a, int b)
{
return a + B;
}
<summary>
Instance method
</summary>
<param name= "a" ></param>
<param name= "B" ></param>
<returns></returns>
public int Addinstansfunc (int a, int b)
{
return a + B;
}
}

C # Delegate Chapter