asp.net mvc 3 - A first chance exception of type 'System.Data.OptimisticConcurrencyException' occurred in System.Data.Entity.dll -


Good afternoon, completely stumped on this one. Everything was recovering until I add more records to my database.

I get this error when I press edit:

Type 'system.Data.OptimisticConcurrencyException' is a first exception to System.Data.Entity.dll

< P> My code is as follows: 

  Edit Public Functionality (int id) {From time to time = DB. time. Single (T = & gt; T.index == ID); See Return (Time); } // // Post: / Default 1 / Edit / 5 [HTPOST] Edit Public Action Result (Time Timing) {System.Diagnostics.Debug.WriteLine ("HERE"); If (ModelState.IsValid) {db.Times.Attach (time); Db.ObjectStateManager.ChangeObjectState (Time, EntityState.Modified); Db.SaveChanges (); Return Redirect Action ("Index"); } View return (time); }

I was doing MVC programming for that long, so the laymans terms will be welcomed!

Thanks

I have started a new project and the whole of the controllers, The code is copied, it seems that has worked.

I think the main issue was to make a lot of changes to the model with the primary key etc. And basically it was bad for me.

Better database architecture needed !!!!


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