Last week I replied to a post about exceptions, it made me think those programming .Net daily take for granted the etiquette of using Exceptions. So I thought I would share some of my thoughts… well it is a sort of a rules’ish list.

  • Exceptions can be expensive, so avoid using them for normal conditions
  • Only catch the exceptions you can handle
  • Don’t hide/swallow exceptions
  • Don’t catch System.Exception as will also catch unmanaged exceptions such as System.Runtime.InteropServices.SEHException
  • Consider using your own custom exceptions or derive them from similar ones
  • Remember inner exceptions when processing an exception
  • Use the Exception suffix on your custom exception
  • Consider using Microsoft’s StyleCop to point out common issues
  • Avoid using System.ApplicationException if you want to use the code in the Silverlight CLR
  • Remember to serialize your own exception types
  • Use xml comment docs for the exceptions a method raises… it helps intellisense..

I suspect I might have missed something.. so feel free to comment..

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