[FIXED] Why Create Custom Exceptions?

Issue

Why do we need to create custom exceptions in .NET?

Solution

Specific customs exceptions allow you to segregate different error types for your catch statements. The common construct for exception handling is this:

try
{}
catch (Exception ex)
{}

This catches all exceptions regardless of type. However, if you have custom exceptions, you can have separate handlers for each type:

try
{}
catch (CustomException1 ex1)
{
    //handle CustomException1 type errors here
}
catch (CustomException2 ex2)
{
    //handle CustomException2 type errors here
}
catch (Exception ex)
{
    //handle all other types of exceptions here
}

Ergo, specific exceptions allow you a finer level of control over your exception handling. This benefit is shared not only by custom exceptions, but all other exception types in the .NET system libraries as well.

Answered By - Jon Limjap

Answer Checked By - Clifford M. (PHPFixing Volunteer)