Try-Finally in C#

This article has been excerpted from book "The Complete Visual C# Programmer's Guide" from the Authors of C# Corner.

If you are interested in executing a certain block of code irrespective of whether an exception occurs and you do not worry about catching an exception, then you'll likely want to use the try-finally statement. However, we do not recommend using this statement because you will not be able to see what the exception is about. Instead, you should use the try-catch-finally statement. Listing 7.8 shows the structure of the Try-Finally block:

Listing 7.8: Try-Finally Syntax

            try
            {
                //Even if a goto statement were here
                //control gets transferred to the statement identified in
                //goto statement only after executing the finally block.
            }

            finally
            {
                // This block of code will always get executed
                // whether an exception occurs or not
                // Any cleanup code goes here,
                // especially to release any system resources
                // such as file handles and network connections
            }

First the try block is executed, and then the finally block is executed, irrespective of whether an exception occurs or not. Even if a goto statement is present in the try block, the control gets transferred to the label in the goto statement only after executing the finally block.

Conclusion

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The Complete Visual C# Programmer's Guide covers most of the major components that make up C# and the .net environment. The book is geared toward the intermediate programmer, but contains enough material to satisfy the advanced developer.