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Hello,

I'm trying to send a Null value in a DateTime field while calling my stored procedure.

If I use this first method (short with one line), i got the following error message:

Error Message:
Type of conditional expression cannot be determined...

in the command window I get:

? result
{System.DBNull}
[System.DBNull]: {System.DBNull}

I need to check for this in code. I then tested in the command window

if result = system.DBNull
'DBNull' is a type and cannot be used as an expression.

How can I check to see if result is equal system.dbnull in my code?...

How can I test to see if an object is System.DBNull? I have an event and
need to get the value from a parameter like this:


Private Sub ValueChanged(By Val sender As Object, ByVal e As
System.EventArg s)
Try
Dim ID As Int32
'Next line is suto code. it doesnt compile
If sender.Value Is System.DBNull Then
ID = 0
Else
ID = sender.Value
End If


If I put...