System.Data.Linq.ChangeConflictException: Row not found or changed

Question

I am trying to delete a selected gridview row using LINQ (No LINQDataSource).

When the selection is changed, the detailsview binding is changed also. I can add a new

Answer 1

I had a similar problem and although deleting and re-adding the DBML table/class helped some users, for me it was a bit different since I'm using WCF with detached entity and a ListView on the client.

If I used the .Attach(entity) it failed - "Row not found or changed" But when using .Attach(entity, original) it works every time

public void DeleteTask(Task task)
    {
        TwoDooDataContext db = new TwoDooDataContext();
        db.Tasks.Attach(task,GetTaskByID(task.ID));
        db.Tasks.DeleteOnSubmit(task);
        db.SubmitChanges();
    }