Method as a parameter, delegated Application

Insus. NET first writes two super simple methods, all of which are passed in with a string as the parameter, and then Response. Write () throws the passed string value.



Well, create another webpage and pull a TextBox and a button on the webpage:

Then, go to. cs to write the OnClick event. In the event, execute two methods respectively, and different results will be obtained:

Run the animation:



Now, let's try to pass in the Hi () or Hello () method as a parameter and then execute it. We must first announce a Commission:

Alert (message );

If you use delegate to declare a delegate, the return type is the same. For example, if it is void, the parameters of the method should be the same.

The running result is the same as that of the previous animation.



In the Click Event of a Button, you can use anonymous delegate: