Clever Geek Handbook

FXCop rule for "If X = Nothing" when X is an integer with zero value

1 Dim x as Integer? = Nothing  
2 If x = Nothing Then  
3     'this is what I think will happen   
4 Else  
5     'this is what really happens   
6 End If

The correct way to write it is "If x is Nothing".

Is there an FXCop rule that checks this? Or better yet, can someone show me how to write my own?

Jonathan

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Another good resource for writing custom FxCop rules can be found here: binarycoder



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The best way to learn how to write custom rules for FXCop is the forum here. It involves creating a custom assembly to parse the code and test it.



Specifically, you want to write a rule that says, “Instead of using = nothing for a nullable type, make sure you use hasvalue.

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