C # Call events in the class library

First, define the event in the Class Library:

// Define the delegate public delegate void DelWeiTuo (string name); // define the event public event DelWeiTuo EventWeiTuo;

 

Define the event trigger method:

// Define the event trigger method public void Fun (string name) {if (EventWeiTuo! = Null) {EventWeiTuo (name );}}

 

Event triggered when the condition is met:

 public void Number()        {            int j = 0;            for (int i = 1; i <= 100; i++)            {                j += i;            }            if (j == 5050)            {                Fun("wuyang");            }        }

Next, call:

First, reference the class library, bind events, and execute the trigger method.

 

Bind event:

Class1 L4 = new Class1 (); // bind the event to be executed after the event is triggered. Call the XianShi method, fig + = XianShi;

Trigger method:

cla.Number();

Method To be called at the front end:

public void  XianShi(string name)        {            Response.Write(name);                    }

It may be a bit messy, mainly for the convenience of recalling events