C # delegate
1. To delegate to the method as a parameter method is to pass, do not want to do their own thing, there is a reference type variable to a method of reference. Reference may be changed at runtime.
All delegates are derived from the class System.Delegate
- The commission statement
Public delegate return type of the delegate name (passed parameters)
(1) delegate with no parameters
Principal (2) with parameters
3. multicast delegate (Multicasting of a Delegate)
Delegate object can use the "+" operator merge. Merge two calls a delegate entrusted it merged. Only the same type of trust can be combined. "-" operator is used to remove the component from the combined delegate delegate.
With this useful feature delegate, you can create a call list of methods to be called when the delegate is invoked. This is called multicast delegate (multicasting), also known as multicasting. The following program demonstrates a multicast delegate:
