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Lesson 12 - Exceptions in C# .NET for the second time

C# .NET Files and I/O Exceptions in C# .NET for the second time

We've already mentioned exceptions in our C# .NET course. In today's tutorial, we're going to look at them in further detail.

Determining the exception type

So far we used the catch block without any parameters. However, we're able to catch the exact exception that caused the error. We'll insert an e variable parameter of the Exception type to the catch block. The Exception class represents an exception and all exceptions that are inherited from it. It contains the Message property where the error message is stored. The ToString() method returns this message with all of the other information about the exception, e.g. the row number in which it occurred. By the way, this is how Visual Studio analyzes unhandled exceptions, before providing us with the line where the error occurred.

Let's try to catch the exception for when we divide by zero, and it print its Message and the ToString() result:


 

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In this tutorial, we'll introduce more exception constructs, parameterized catch blocks, create custom exceptions, and list C# .NET exceptions.

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Article has been written for you by David Capka
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The author is a programmer, who likes web technologies and being the lead/chief article writer at ICT.social. He shares his knowledge with the community and is always looking to improve. He believes that anyone can do what they set their mind to.
Unicorn university The author learned IT at the Unicorn University - a prestigious college providing education on IT and economics.
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