Issuing Direct SQL from MVC5

Recently I needed to add a quick updater that added a value to Table1


when someone copied data from Table2.




Now, the normal way to do this with Entity Framework is to load the


Entity, and change the value, then save the changed entity.




But I am a SQL guy from way back, and rather than fetch the entire


record and write it all back through Entity Framework, I figured it


would be Way more efficient if I just sent the database an update


directly. Turns out that for us old SQL developers, it's terribly easy


to do just that.




Here is my example subroutine, for your dining pleasure.

        /// 

        /// Updates a Toolkit with the number of the Assignment ID Created from it. If you are trying to remove an assignment id from a toolkit, use RemoveAssignmentFromToolkit()
        /// 
        /// The toolkit ID to be updated
        /// The AssignmentID to attach
        public static void UpdateToolkitWithAssignmentID(int ToolkitID, int AssignmentID)
        {
            using (ORM db = new ORM())
            {
                try
                {
                    db.Database.ExecuteSqlCommand(
                        "UPDATE [dbo].[ToolkitRequests] SET[AssignmentID] = @AID Where[UniqueId] = @ID",
                        new SqlParameter("@AID", AssignmentID),
                        new SqlParameter("@ID", ToolkitID)
                        );
                }
                finally
                {
                    db.Dispose();
                }
            }
        }

That's it! It's super fast, and there is no mucking about in Entity


Framework. NOTE that all the EF validity checking is skipped when you


do this, so use it in cases where it's a simple SQL and you can ensure


data integrity yourself. In my case, there is no way to get in this


routine without valid values in both params, so I know I won't get


surprised with a stray NULL.






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