Why is try {…} finally {…} good; try {…} catch{} bad?

Question

I have seen people say that it is bad form to use catch with no arguments, especially if that catch doesn\'t do anything:

StreamReader reader=new  StreamRead         


        

Answer 1

Use Try..Catch..Finally, if your method knows how to handle the exception locally. The Exception occurs in Try, Handled in Catch and after that clean up is done in Finally.

In case if your method doesn't know how to handle the exception but needs a cleanup once it has occurred use Try..Finally

By this the exception is propagated to the calling methods and handled if there are any suitable Catch statements in the calling methods.If there are no exception handlers in the current method or any of the calling methods then the application crashes.

By Try..Finally it is ensured that the local clean up is done before propagating the exception to the calling methods.