>Hi,
>I have DevideByZero exception in expression when LN_QTY=0D
>
>LN_RESULT = IIf(LN_QTY > 0D, LN_SUM / LN_QTY, -1D)
>
>I expect function return me -1D, but so far as I see, VB compiler evaluate every expression not depends from logical rule?
>
>Is it bug or feature? Is the same in C# ?
>
>Thanks
>Denis

There is another form of IF in VB which is the shortcut. IIF evaluates all expressions.

See this blog post
http://blogs.lessthandot.com/index.php/DesktopDev/MSTech/VBNET/if-and-iif