How do you evalute a null sql output paramater. I've tied several ways but can find one that works. I always get an error code of Conversion from type 'DBNull' to type 'String' is not valid.

I've tried both IsDbNull and if the value = nothing - both return the same error.

Can anyone help me figure this one out? It has to be something simple!
Code:
If IsDBNull(e.Command.Parameters("@JobCount")) Then
            Me.lblInternalJobCount.Text = 0
        Else
            Me.lblInternalJobCount.Text = e.Command.Parameters("@JobCount").Value
 End If
'I have also tried checking for nothing and that doesn't work either