July 2003
Intermediate to advanced
736 pages
16h 35m
English
Content preview from Visual Basic® .NET Power CodingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Sorting and Filtering a DataSet
If you know how to write SQL, you know that you can sort and filter data with ORDER BY and WHERE clauses. However, this approach requires that you requery the database each time the view changes. Such requerying is an expensive and impractical operation, especially when you have thousands of simultaneous users and the data has already been queried.
With ADO.NET you have better alternatives. You can read data into a DataSet and change the view and order of the data without requerying the database. You can change the order and rows with the DataView.RowFilter and Sort properties or with the DataTable.Select method. The subsections that follow contain examples of each of these.
Filtering and Sorting a DataView
The ...
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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.