C# 4.0 Unleashed

Introducing Exceptions

With exceptions entering the picture, you can separate error handling from the regular flow of an application in a block-structured manner. For example, the following example illustrates the use of the System.IO .NET Framework APIs to read a file from disk:

Various methods used in the preceding code can throw an exception. Instead of getting an error code back that needs to be checked on the spot, we declare an event handler using the try-catch statement. Each exception we’re interested in handling can have its own catch block. If an exception is left unhandled, it simply propagates to the caller of the current method. ...