In c#, the try-catch-finally statement is useful to handle unexpected or runtime exceptions that will occur during the execution of the program.
In try-catch-finally statement, the
try block is used to hold the code that may cause an exception,
catch block to handle exceptions and
finally block is used to clean up or release any resources that are allocated in a
try block. For example, close database connections or any streams or files that are opened in
In c#, the finally block will always come after
catch blocks and the
finally block will always execute even if an exception occurred or not, and it is useful to clean up or dispose of unmanaged objects based on the requirements.
Following is the syntax of handling errors in c# using a try-catch-finally statement.
As per the above syntax, the try block will contain the guarded code that may cause an exception so that if any errors occurred in our code immediately, the code execution would move to catch block to handle those exceptions.
After completion of try or try & catch blocks, the finally block will always be executed even if an exception occurred or not. It is useful to clean up or release unmanaged resources.
In try-catch-finally statement, only one try & finally blocks are allowed but, we can use multiple catch blocks to handle different exception types.
Following is the example of handling exceptions in c# using the try-catch-finally statement.
If you observe the above code, we used try, catch, and finally blocks to handle runtime or unexpected errors during the program's execution. Here, we wrote a code that may throw an exception inside of
try block and in
catch block, we are handling the exception. As discussed, the
finally block will execute after completion of
catch block execution and release the required resources.
This is how we can use try-catch-finally blocks to handle unexpected or runtime exceptions based on our requirements.