C # Delegate

A good memory is better than a bad pen, write to the impression of a deeper.

Commissioned

1. A custom data structure that uses the keyword delegate definition, in the form of a delegate return type delegate name (parameter list), whose return type and argument list need to be consistent with the delegate method, using the procedure to define-declare-initialize-Invoke. The delegate stores the address of the method, which is the reference type, and when a delegate is invoked, the program automatically executes its stored method.
2. Delegates are initialized in several ways as the C # version changes
   

   delegate int Mydel (int a,int b);      Define the delegate Mydel _mydel;                         Statement _mydel=new Mydel (FUN1);              Initialization Method 1
   _MYDEL=FUN1;                         Initialization method 2_mydel (A, b);                         Call

3. Delegates can use the + = and-= bindings and Unbind methods
   

   _mydel+=fun2;            On the basis of the original Fun1 and binding Fun2, sequential execution _mydel-=fun2;            To unbind Fun2, there's only Fun1.

C # Delegate