Server Error in '/' Application.

Row not found or changed.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

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

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[ChangeConflictException: Row not found or changed.]
   System.Data.Linq.ChangeProcessor.SubmitChanges(ConflictMode failureMode) +938834
   System.Data.Linq.DataContext.SubmitChanges(ConflictMode failureMode) +391
   Controller.Config.Addvister() +214
   MVC_Kutun.Global.Session_Start(Object sender, EventArgs e) +251
   System.Web.SessionState.SessionStateModule.RaiseOnStart(EventArgs e) +10073075
   System.Web.SessionState.SessionStateModule.CompleteAcquireState() +160
   System.Web.SessionState.SessionStateModule.BeginAcquireState(Object source, EventArgs e, AsyncCallback cb, Object extraData) +1095
   System.Web.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +254
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +48
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +159


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4087.0