How does the exception handling mechanism work in C#?

In C#, the exception handling mechanism is mainly implemented through the try-catch-finally statement block. When an exception occurs during program execution, an exception object is thrown, and the program will look for a matching catch block in the try block to handle this exception.

The try block contains code that may throw an exception. When an exception occurs, the program will jump to the matching catch block to execute error handling code. The catch block can handle the exception, log it, or prompt the user with error messages.

Additionally, you can use the finally block to define some code that must be executed regardless of whether an exception occurs, like cleaning up resources. The code in the finally block will be executed after the code in the try block finishes, regardless of whether an exception occurs.

In addition to the try-catch-finally statement block, C# also includes the throw statement for manually throwing exceptions, allowing for specifying the type and error message of the exception in the code. Additionally, C# provides advanced exception handling mechanisms such as exception filters and custom exception types, enabling more flexible handling of exceptional situations.