Delete a Row During/After Validation

[Aaron]

During row validation I am checking to see if the row is a duplicate of another row in the GridView. If it is a duplicate, I set IsValid to false.

In RowEditEnded, I only save the underlying entity back to the database if row.IsValid == true.

However, the duplicate row still hangs out in the GridView.  Additionally, if they close the Window and re-open it, the duplicate row is still there (it's a detached entity) even though it hasn't been persisted to the database.  The duplicate row only disappears when the close the appellation and re-launch it.

I could remove all detached entities when the window is closing, but I'm hoping I can just remove the duplicate row in the RowValidating or RowValidated event handlers.

Any suggestions?

Thanks.

Aaron

[Dimitrina]

Hi Aaron,

As you say you only save the distinct values to the database, generally RadGridView will not replace its items until a new query to the server is executed and all the data is fetched again. 

Basically you could hide particular rows by adding a FilterDescriptor that filters your items by a certain criteria (in your case you need to have such a boolean property). You can then define the Filtering criteria as explained in the Programmatic Filtering article. As another example, you can check the "Programmatic Filtering" WPF Demo. 

Regards,
Dimitrina
Telerik