.net - SSRS Report Expression - Null Being Treated Like Zero?

Apr 11, 2012

Consider this SSRS value expression :=IIF(First(Fields!MyCol.Value, "MyDataSet")=0, "yes", "no")

MyCol is a Nullable column. I want "yes" to be output only when MyCol equals 0. The code above correctly evaluates to "yes" when MyCol is 0. However, it also evaluates to "yes" when MyCol is Nothing (i.e. NULL in SQL Server). Is this expected behavior ?

I had to resort to the following longer expression to get the desired result :

=IIF(Not(First(Fields!MyCol.Value, "MyDataSet") is Nothing) And First(Fields!MyCol.Value, "MyDataSet")=0, "yes", "no")Is there a shorter version of this which also works ?

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