Ever get this exception in a C# program?

 

This post is a bit of a tip on how to solve the following Exception. It does rely on the Code Analysis feature new in Visual Studio 2010.

Well here are a couple of tips to determine just where in the format string the error is:

1. Rebuild the project with Code Analysis (menu Project -> <<Project name>> Properties).
   • is the option which need to be switched on.
   • Rebuild
   • Check the Errors Window:
   • Which is all well and good but, where on earth is 3208 in the string?
2. Debug the project.
   • Break on where the string is being used (not necessary but helps me keep my mind on what I’m trying to do)
   • Quick watch the string variable.
   • The Do a substring of the string to show the segment which has the error in it.
   •  
3. Correct the error (need “{{“and “}}” in the format string for the single braces in the input string.

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