Question

I have an LINQ entity like so:

ID1 INT
ID2 INT
ID3 INT
Value VARCHAR(50)

ID1, ID2 & ID3 are composite primary keys. It has no association with any other entity.

An IndexOutOfRangeException is thrown whenever I update or delete after SubmitChanges. I’m running on .NET 3.5 SP1.

I have tried creating another project, still on .NET 3.5 SP1, but don’t encounter that exception.

Here is the code:

        DataClasses context = new DataClasses();
        Entity entity = (from entities in context.Entities
                              where entities.ID1 == 3
                                && entities.ID2 == 1
                                && entities.ID3 == 1
                              select entities).First();

        context.Entities.DeleteOnSubmit(entity);
        context.SubmitChanges();

Here is the exception:

System.IndexOutOfRangeException was unhandled by user code
  Message="Index was outside the bounds of the array."
  Source="System.Data.Linq"
  StackTrace:
       at System.Data.Linq.IdentityManager.StandardIdentityManager.MultiKeyManager`3.TryCreateKeyFromValues(Object[] values, MultiKey`2& k)
       at System.Data.Linq.IdentityManager.StandardIdentityManager.IdentityCache`2.Find(Object[] keyValues)
       at System.Data.Linq.IdentityManager.StandardIdentityManager.Find(MetaType type, Object[] keyValues)
       at System.Data.Linq.CommonDataServices.GetCachedObject(MetaType type, Object[] keyValues)
       at System.Data.Linq.ChangeProcessor.GetOtherItem(MetaAssociation assoc, Object instance)
       at System.Data.Linq.ChangeProcessor.BuildEdgeMaps()
       at System.Data.Linq.ChangeProcessor.SubmitChanges(ConflictMode failureMode)
       at System.Data.Linq.DataContext.SubmitChanges(ConflictMode failureMode)
       at System.Data.Linq.DataContext.SubmitChanges()
       at Project.Page.Page_Load(Object sender, EventArgs e) in C:\ProjectFolder\Project\Page.aspx.cs:line 31
       at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
       at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
       at System.Web.UI.Control.OnLoad(EventArgs e)
       at System.Web.UI.Control.LoadRecursive()
       at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
  InnerException: 

Answer 1

I re-created the DBML from scratch. Sigh…