How To Create A Custom Class That Inherits From System
Apr 22, 2010
I wanted to create a custom class that inherits from System.Exception and adds a few properties and methods specific to the project.
The issue I'm seeing is that a standard try/catch block catches generic Exception class and the compiler thinks that converting that to my custom class is OK. However, at runtime if the actual error is something else like a a System.Net.WebException for instance, then at runtime it will not convert to my custom class. Then my own error catch throws an InvalidCastException.
Obviously the one thing I don't want to happen is to have my error logging methods throw errors on their own...
So, how can I convert ANY exception to something that my custom class can use?
Here's a code example:
Csharp Code:
[code]....
Now, this code builds just fine... VS2008 and VS2010 have no issue with converting an "Exception" to "MyErrorClass", but at runtime it certainly doesn't like converting a "WebException" to "MyErrorClass"...
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