How do I create custom exceptions in C#?

How do I create custom exceptions in C#?

To create a custom exception in C#, you can inherit from the built-in Exception class. Here's a simple example:

public class MyCustomException : Exception
{
    public MyCustomException(string message) : base(message)
    {
    }
}

Can you show me how to throw this custom exception?

Sure! You can throw your custom exception like this:

if (someCondition)
{
    throw new MyCustomException("Something went wrong!");
}

How can I catch this custom exception?

You can catch your custom exception using a try-catch block:

try
{
    // code that may throw the exception
}
catch (MyCustomException ex)
{
    Console.WriteLine(ex.Message);
}

What are some best practices for using custom exceptions?

Some best practices include:

1. Use meaningful names for your exceptions.
2. Provide detailed messages.
3. Avoid using custom exceptions for control flow.