The ExecuteScalar function should return a null reference if the resultset is empty. Since that is not working for some reason, try putting a breakpoint on the start of the If block and check the return value of the ExecuteScalar call, when the record does not exist. Whatever that value is, use that as your condition for inserting.

Charles

Could the problem be with ’1Command IS NOTHING’? It seems like it never finds this to be true and always goes to ELSE. Is there another way to check this?

Again, thanks for all your help!

If (“SELECT DataID FROM table1″) = UserID
Then Update
Else Insert
End If

That’s 2 queries every time. Do the update (1 query) and see if any rows were affected. If not, do the insert (possible second query).

If you really really want to use an IF, the IF should be:

IF EXISTS(SELECT 1 FROM table1 WHERE dataId=userId) THEN
UPDATE…;
ELSE
INSERT…;
END IF;

Here is your code rearranged a bit:

Try
‘Create the connection first
conNCIGFDN = New SqlConnection(“Server=server;UID=uid;PWD=pass;database=DB”)

‘Opening the coneection is optional.
conNCIGFDN.Open()

‘Create the SQLCommand using the connection you just created. The other SQLCommand objects will use the same SQLConnection object.
lCommand = New SqlCommand(“SELECT UserID FROM dnn_KB_XMod_Index_VC500 WHERE UserID = “”" & UserID & “”"”, conNCIGFDN)
If lCommand.ExecuteScalar Is Nothing Then
strInsert = “INSERT…
cmdInsert = New SqlCommand(strInsert, conNCIGFDN)
cmdInsert.ExecuteNonQuery()
Else
strUpdate = “UPDATE….
cmdUpdate = New SqlCommand(strUpdate, conNCIGFDN)
cmdUpdate.ExecuteNonQuery()
End If
‘if you explicitly open the connection, you should close it.
conNCIGFDN.Close()

What happens now?

Try
lCommand = New SqlCommand(“SELECT UserID FROM dnn_KB_XMod_Index_VC500 WHERE UserID = “”" & UserID & “”"”, conNCIGFDN)
If lCommand.ExecuteScalar Is Nothing Then
conNCIGFDN = New SqlConnection(“Server=server;UID=uid;PWD=pass;database=DB”)
strInsert = “INSERT…
conNCIGFDN.Open()
cmdInsert = New SqlCommand(strInsert, conNCIGFDN)
cmdInsert.ExecuteNonQuery()
Else
strUpdate = “UPDATE….
cmdUpdate = New SqlCommand(strUpdate, conNCIGFDN)
cmdUpdate.ExecuteNonQuery()
conNCIGFDN.Close()
End If
….

Any suggestions on how to get this working correctly? I’m very close, thanks to this forum, to getting this to work.