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C# events are used to solve troubles in delegates. One of them can easily override delegate properties, which can eventually lead to bugs in your code. To avoid this, C# uses events and defines wrappers around delegates.
#To use events, you should first define a delegate. An event is a delegate type, pressing a key is an example of an event.
public delegate voide Demo(String val); public event Test TestEvent;
this.TestEvent += new Demo (DemoData);
#A delegate is a reference type variable that holds a reference to a method. References can be changed at runtime.
public delegate void Demo(String val);
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