Linqdatasource updating row not found or changed
What I really want to-do is to display the Category Name and Supplier Name instead, and provide a drop-downlist while in Edit mode to enable end-users to easily associate the Supplier ID and Category ID values.I can change the Grid View to display the Supplier Name and Category Name instead of the ID's by replacing the default .
I have set out to make the Linq Data Source work with the SPGrid View against Share Point to support paging, sorting and filtering out of the box (as much as possible). I´m gonna populate the data source from that method in the codebehind. 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 will never use anything other than linq in the future, that´s for sure.Over the last few weeks I've been writing a series of blog posts that cover LINQ to SQL.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.
In the selecting event handler I´m just making an anonymous type from the SPList Items in the contacts list.
Also notice that you have to set the Page Template to null on the SPGrid View.
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.
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.