Linq to sql view not updating are piko and sekihan dating
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.
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.
In the source code below I'm going to take advantage of the fact that each Product class in the LINQ to SQL data model we created has a Supplier and Category property on it.
What this means is that I can easily databind their Supplier. Category Name sub-properties within our Grid: And now when I run the application I get the human readable Category and Supplier name values instead: To get drop-down list UI for the Supplier and Category columns while in Edit-Mode in the Grid, I will first add two additional columns we added to our Grid View earlier and customize their edit appearance (by specifying an Edit Item Template).
Select the new "LINQ" option in the dialog box and name the resulting designer will then display the available LINQ to SQL Data Context classes that your application can use (including those in class libraries that you are referencing): We'll want to select the data model we created with the LINQ to SQL designer earlier.We'll also want to select the "Advanced" button and enable updates and deletes for the datasource: When we click the "Finish" button above, VS 2008 will declare a to point to it (via its Data Source ID property).It will also automatically provide column declarations in the Grid based on the schema of the Product entity we choose to bind against: We can then pull up the "smart task" context UI of the Grid View and indicate that we want to enable paging, sorting, editing and deleting on it: We can then press F5 to run our application, and have a product listing page with full paging and sorting support (note the paging indexes at the bottom of the grid below): We can also select the "edit" or "delete" button on each row to update the data: If we flip into source view on the page, we'll see that the markup of the page contains the content below.Over the last few weeks I've been writing a series of blog posts that cover LINQ to SQL.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.