Custom Exception Classes

In C#, exception classes are the building blocks of exception handling. While the .NET Framework provides many predefined exception classes to handle common scenarios, there might be cases where you need to create custom exception classes to handle application-specific exceptions.

Custom exception classes allow you to define your own exception types that inherit from the base Exception class. This enables you to create exceptions that are meaningful and relevant to your application domain.

To create a custom exception class, you need to:

1. Define a new class that inherits from the Exception base class.
2. Add any additional properties or methods that you want to include in your custom exception.

Here's an example of creating a custom exception class in C#:

1public class ChessException : Exception
2{
3    public ChessException(string message) : base(message)
4    {
5    }
6
7    public ChessException(string message, Exception innerException) : base(message, innerException)
8    {
9    }
10
11    // Add any additional properties or methods for the custom exception
12}

In this example, we define a ChessException class that inherits from the base Exception class. The class has two constructors to set the error message and optional inner exception.

Creating custom exception classes gives you the flexibility to handle specialized error scenarios in your application. By defining custom exception classes, you can enhance the clarity and specificity of your exception handling code.