Summary  
This chapter explains how events function as delegates, showing how to subscribe and unsubscribe methods using += and -= operators and detailing the required void Handler(object sender, EventArgs e) signature.  

General domain of usage  
User interface event handling

## Important Points:
- The list of **available classes** in **MAUI** can be seen here;
- The `EventHandler` type is basically a **delegate** that executes the attached methods whenever relevant;
- We cannot use the assignment operator (`=`) to add a method to an `EventHandler`.
`EventHandler` supports `+=` and `-=` operators;
- A method which is binded to an EventHandler needs to have the following signature: `void methodName(object sender, EventArgs e);`;


Which of the following are correct signatures for an Event Handler Method? Here `CustomArgs` is derived from `EventArgs`.

In this course, we will learn about some advanced C# concepts along with MAUI, which is an application development library. We will learn how to create some interesting GUI applications while keeping them quick and responsive using techniques like Threading. We will make applications that will interact user input and APIs, and apart from that, we will cover some important C# concepts like Reflection and Generics. This course will further improve our programming skills and will give us a strong foundation to move forward towards Web Development.

Events

Important Points: