I'm getting this terrible error. It is driving me crazy. Please help me out.


Concurrency violation: the UpdateCommand affected 0 of the expected 1 records.
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.DBConcurrencyException: Concurrency violation: the UpdateCommand affected 0 of the expected 1 records.

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:


[DBConcurrencyException: Concurrency violation: the UpdateCommand affected 0 of the expected 1 records.]
   System.Data.Common.DbDataAdapter.UpdatedRowStatusE rrors(RowUpdatedEventArgs rowUpdatedEvent, BatchCommandInfo[] batchCommands, Int32 commandCount) +277
   System.Data.Common.DbDataAdapter.UpdatedRowStatus( RowUpdatedEventArgs rowUpdatedEvent, BatchCommandInfo[] batchCommands, Int32 commandCount) +48
   System.Data.Common.DbDataAdapter.Update(DataRow[] dataRows, DataTableMapping tableMapping) +1802
   System.Data.Common.DbDataAdapter.UpdateFromDataTab le(DataTable dataTable, DataTableMapping tableMapping) +38
   System.Data.Common.DbDataAdapter.Update(DataSet dataSet, String srcTable) +166
   com.jivejewelry.Cart.doUpdate(Boolean bCommit) +71
   com.jivejewelry.Cart.doSwitch() +355
   com.jivejewelry.SignIn.imgButLogin_Click(Object sender, ImageClickEventArgs e) +652
   System.Web.UI.WebControls.ImageButton.OnClick(Imag eClickEventArgs e) +111
   System.Web.UI.WebControls.ImageButton.RaisePostBac kEvent(String eventArgument) +244
   System.Web.UI.WebControls.ImageButton.System.Web.U I.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +5
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl, String eventArgument) +11
   System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) +31
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5157