. Net custom events, classic simple instance code

1. Create a new console application TestDelegate. This project mainly implements a simple event processing program: Water Heater heating, alarm monitoring, and alarm when the hot water temperature reaches 80 degrees.

2. Define the delegate Handler

Public delegate void PlayGameHandler (object sender, System. EventArgs e );

3. Add an alarm class. The alarm method is called only when the temperature exceeds 80 degrees.

Alarm (); Console. WriteLine (

4. Add a water heater class and use the circulating heating water heater to trigger an event alert when the temperature exceeds 80 degrees.

= (I =; I <; I ++); Console. WriteLine (I. ToString () + (PlayGame! = (I> =) PlayGame (, e );

5. The client starts calling

Main (= z. PlayGame + =

6. Results After running

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Success, hope to help everyone, have any questions can communicate with shixudong3@yeah.net, thank you