************** Exception Text **************
System.InvalidOperationException: Can't access SelectionStart unless the Editor is in edit mode.
   at Infragistics.Win.EmbeddableEditorBase.get_SelectionStart()
   at Infragistics.Win.EmbeddableEditorBase.set_SelectionStart(Int32 value)
   at Infragistics.Win.UltraWinGrid.UltraGridCell.SelectAll()
   at Infragistics.Win.UltraWinGrid.UltraGridCell.OnAfterCellEnterEditMode()
   at Infragistics.Win.UltraWinGrid.UltraGridLayout.OnEditorAfterEnterEditMode(Object sender, EventArgs e)
   at Infragistics.Win.EmbeddableEditorBase.OnAfterEnterEditMode()
   at Infragistics.Win.EditorWithText.OnAfterEnterEditMode()
   at Infragistics.Win.EmbeddableEditorBase.EnterEditMode(EmbeddableUIElementBase embeddableElement)
   at Infragistics.Win.UltraWinGrid.UltraGridCell.EnterEditorIntoEditMode(Boolean byMouse)
   at Infragistics.Win.UltraWinGrid.UltraGridCell.EnterEditMode(Boolean byMouse, Boolean showingDropDown)
   at Infragistics.Win.UltraWinGrid.UltraGridCell.SetFocusAndActivate(Boolean byMouse, Boolean enterEditMode, Boolean byTabKey)
   at Infragistics.Win.UltraWinGrid.UltraGridLayout.PerformAction(UltraGridAction actionCode, Boolean shiftKeyDown, Boolean ctlKeyDown)
   at Infragistics.Win.UltraWinGrid.UltraGrid.PerformKeyAction(Enum actionCode, Boolean shiftKeyDown, Boolean ctlKeyDown)
   at Infragistics.Win.UltraWinGrid.UltraGridUIElement.PerformKeyAction(Enum actionCode, Boolean shiftKeyDown, Boolean ctlKeyDown)
   at Infragistics.Win.ControlUIElementBase.ProcessKeyDown(Object sender, KeyEventArgs e)
   at Infragistics.Win.ControlUIElementBase.ProcessKeyDown(KeyEventArgs e)
   at Infragistics.Win.UltraWinGrid.UltraGridUIElement.ProcessKeyDown(KeyEventArgs e)
   at Infragistics.Win.Utilities.ProcessEvent(Control control, ProcessEvent eventToProcess, EventArgs e)
   at Infragistics.Win.UltraControlBase.OnKeyDown(KeyEventArgs e)
   at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
   at System.Windows.Forms.Control.ProcessKeyMessage(Message& m)
   at System.Windows.Forms.Control.WmKeyChar(Message& m)
   at System.Windows.Forms.Control.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.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)