Asp net datasource onupdating Free sexy teen dating and chat
Important: The beauty of LINQ and LINQ to SQL is that it obviously isn't tied to being used only in UI scenarios - or with particular UI binding controls like the Linq Data Source.
As you've seen in my previous posts in this series, writing code using the LINQ to SQL ORM is extremely clean.
You can always write custom UI code to directly work against your LINQ to SQL data model if you prefer, or when you find a UI scenario that isn't particularly suited to using the control to build the web application scenario I defined above.
We'll begin working on the application by first defining the data model we'll use to represent our database.
I could then point a Grid View at it (by settings its Data Source ID property) to get a grid-like view of the Product content: Without having to-do anything else, I can run the page and have a listing of my Product data with built-in support for paging and sorting over the data.
For example, we could remove the "Quantity Per Unit" column below and re-run our application to get this slightly cleaner UI: If you have used the control before and explicitly passed update parameters to update methods (the default when using Data Set based Table Adapters) one of the things you know can be painful is that you have to change the method signatures of your Table Adapter's update methods when the parameters based by your UI are modified.LINQ to SQL is a built-in O/RM (object relational mapper) that ships in the . NET (like the Object Data Source and SQLData Source controls that shipped with ASP. NET UI controls to LINQ to SQL data models super easy.NET Framework 3.5 release, and which enables you to easily model relational databases using . You can use LINQ expressions to query the database with them, as well as update/insert/delete data. The simple data editing web application I'll walkthrough building in this tutorial is a basic data entry/manipulation front-end for products within a database: The application will support the following end-user features: The web application will be implemented with a clean object-oriented data model built using the LINQ to SQL ORM.For example: if we deleted a column in our grid (like above), we'd end up having to modify our Table Adapter to support update methods without that parameter.One of the really nice things about the Currently we are displaying the foreign-key integer values in our Grid View for the Supplier and Category of each Product: While accurate from a data model perspective, it isn't very end-user friendly.