IsDBNull: easy question

[eramgarden]

I get this error:
Argument not specified for parameter 'Expression' of 'Public Function IsDBNull(Expression As Object) As Boolean'.


when I do : if not IsDBNull.lngPriorityId then

But if I have if lngPriorityId <> 0 then it works...

I have defined lngPriorityId in &quot;dim lngPriorityId&quot;...

now, i have another variabe :if (Not IsDBNull(lngPsId)) then and this does NOT give me an error...

why???

 

[Ragnarox]

Hi eramgarden,

I have not been working with .Net for very long but I think I can answer your question.

You have set IsDBNull as a function that requires a parameter to be passed to it. That is why your second item works is that you are using it the way you have set it up.

The first one does not work for that same reason. When you have a function you have to pass in the variables to it from within parentheses and not using the dot framework like you attempted.

I hope that what I said here is correct. If it is not then maybe someone with more experience can explain it better.

Hope this helps.

Brian

 

[eramgarden]

oh, i think you're right!