C# Interview Question #51

What is exception handling in C#?

Exceptions, Delegates, Events & Lambdas Mid-Level Intermediate

Quick Interview Answer

Exception handling is the mechanism used to detect and handle runtime errors in a controlled way. C# primarily uses try, catch, finally, and throw.

Detailed Explanation

Exception handling is the mechanism used to detect and handle runtime errors in a controlled way. C# primarily uses try, catch, finally, and throw.

A try block contains code that may fail. A catch block handles a compatible exception. A finally block runs whether an exception occurs or not and is useful for cleanup when needed.

Applications should catch exceptions only when they can handle, translate, log, or add meaningful context to them. Exceptions should not normally be used for ordinary control flow.

Code Example

try
{
    ProcessOrder();
}
catch (InvalidOperationException ex)
{
    Console.WriteLine(ex.Message);
}
finally
{
    Console.WriteLine("Processing completed.");
}