Hi Kevin,

Thanks a lot for your prompt answer.

Here you have the stack trace that I get if I don't hydrate the object before calling the NewRow() method.

. . . . . .


at OakLeaf.MM.Main.Business.mmBusinessObject.GetRowCount(String tableName)
at OakLeaf.MM.Main.Windows.Forms.mmBindingStrategySimple.BindData(ImmBindingSimple mmControl, DataSet ds, String tableName, String fieldName, mmBusinessObject bizObj)
at OakLeaf.MM.Main.Windows.Forms.mmBindingStrategySimple.BindData(ImmBindingSimple mmControl, mmBusinessObject bizObj, mmBusinessStateChangeEventArgs e)
at OakLeaf.MM.Main.Windows.Forms.mmBindingStrategySimple.BindData(ImmBindingSimple mmControl, mmBaseBusinessObject bizObj, mmBusinessStateChangeEventArgs e)
at OakLeaf.MM.Main.Windows.Forms.mmTextBox.OnBindData(mmBaseBusinessObject bindingSource, mmBusinessStateChangeEventArgs e)
at OakLeaf.MM.Main.Windows.Forms.mmUIHelper.StateChangeHandlerSimple(Control control, mmBaseBusinessObject bizObj, mmBusinessStateChangeEventArgs e)
at OakLeaf.MM.Main.Windows.Forms.mmTextBox.StateChangeHandler(mmBaseBusinessObject bizObj, mmBusinessStateChangeEventArgs e)
at OakLeaf.MM.Main.Business.mmBusinessStateChangeDelegate.Invoke(mmBaseBusinessObject bizObj, mmBusinessStateChangeEventArgs e)
at OakLeaf.MM.Main.Business.mmBusinessObject.OnStateChange(mmBusinessState bizState, String tableName, Object primaryKeyValue, Object[] primaryKeyValues)
at OakLeaf.MM.Main.Business.mmBusinessObject.CallStateChange(mmBusinessState bizState, String tableName, DataRow dr)
at OakLeaf.MM.Main.Business.mmBusinessObject.CallStateChange(mmBusinessState bizState, String tableName)
at OakLeaf.MM.Main.Business.mmBusinessObject.SetCurrentDataSet(DataSet ds, String tableName, Boolean setRequiredFields, Boolean raiseEvents)
at OakLeaf.MM.Main.Business.mmBusinessObjectGeneric`1.SetCurrentDataSet(DataSet ds, String tableName, Boolean setRequiredFields, Boolean raiseEvents)
at OakLeaf.MM.Main.Business.mmBusinessObject.SetCurrentDataSet(DataSet ds, String tableName, Boolean setRequiredFields)
at OakLeaf.MM.Main.Business.mmBusinessObject.SetCurrentDataSet(DataSet ds, String tableName)
at OakLeaf.MM.Main.Business.mmBusinessObject.NewRow(DataSet ds, String tableName, Object defaultValues)
at OakLeaf.MM.Main.Business.mmBusinessObject.NewRow(DataSet ds, String tableName)
at OakLeaf.MM.Main.Business.mmBusinessObject.NewRow(String tableName)
at OakLeaf.MM.Main.Business.mmBusinessObject.NewRow()
at Target.ProTrack.WinApp.VehicleEditForm..ctor(Int32 VehicleID) in D:\Data\DevProjects08\ProTrack\ProTrackWinApp\VehicleEditForm.cs:line 38
at Target.ProTrack.WinApp.VehiclesListForm.toolStripButtonNew_Click(Object sender, EventArgs e) in D:\Data\DevProjects08\ProTrack\ProTrackWinApp\VehiclesListForm.cs:line 55
at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
at System.Windows.Forms.ToolStripButton.OnClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ToolStrip.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at Target.ProTrack.WinApp.AppMainEntry.Main() in D:\Data\DevProjects08\ProTrack\ProTrackWinApp\Main.cs:line 43