December 2002
Beginner to intermediate
432 pages
10h 10m
English
Content preview from ADO.NET Programming in Visual Basic™ .NET
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Reading the Data and Schema
Before the control does anything, it has to be able to read the schema from the database based on the Select statement. Let’s create a public subprocedure and call it ReadData. We want the procedure to behave a little differently when the control is displayed in a form designer than when it is running in an application. When the control is in a designer, we don’t want to read data from the database. What we really want to do is to read the schema. The DataAdapter has a method just for this purpose called FillSchema. The question is, how do we detect if the control is in a designer or in design mode?
If you never developed controls in VB 6, you might be wondering what the heck I’m talking about. This can get a little ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.