Questions about the MySQL, PostgreSQL, and most other databases, as well as using it with PHP can be asked here.
Moderator: General Moderators
-
jeva39
- Forum Commoner
- Posts: 45
- Joined: Sun Aug 27, 2006 11:45 pm
- Location: Panamá
Post
by jeva39 »
In an VB.NET 2005 APP I use this line:
Code: Select all
If Me.dst.Tables("Programas").Rows.Count <= 0 Then
..........code...............
else
...........code..............
End If
DST is the declared DataSet. I use this line when the user access the App to determine if is a New record in the DB or the DB have records created.
I try to use similar code with mySql (mySql - Connector) in an test APP with VB.NET 2005 but I receive this error:
Object Reference not set to an instance of an object
What I can do?
Thanks....
-
volka
- DevNet Evangelist
- Posts: 8391
- Joined: Tue May 07, 2002 9:48 am
- Location: Berlin, ger
Post
by volka »
Have you checked all references != null?
Me.dst != null
me.dst.Tables("Programas") != null
Me.dst.Tables("Programas").Rows != null