Hi,

When I enable row numbering in code behind and click on any cell i the row selector column, I receive the folowing error:

{System.Windows.ApplicationUnhandledExceptionEventArgs}
    base {System.EventArgs}: {System.Windows.ApplicationUnhandledExceptionEventArgs}
    ExceptionObject: {Infragistics.Silverlight.InvalidActiveCellException: The ActiveCell cannot belong to a column that has it's visibility set to Collapsed.
   at Infragistics.Silverlight.Controls.XamWebGrid.SetActiveCell(CellBase cell, CellAlignment alignment, InvokeAction action, Boolean allowSelection, Boolean setFocus, Boolean scrollIntoView)
   at Infragistics.Silverlight.Controls.XamWebGrid.SetActiveCell(CellBase cell, CellAlignment alignment, InvokeAction action, Boolean allowSelection, Boolean scrollIntoView)
   at Infragistics.Silverlight.Controls.XamWebGrid.SetActiveCell(CellBase cell, CellAlignment alignment, InvokeAction action, Boolean allowSelection)
   at Infragistics.Silverlight.Controls.Primitives.RowSelectorCell.OnCellMouseDown(MouseEventArgs e)
   at Infragistics.Silverlight.Controls.XamWebGrid.c(Object A_0, MouseButtonEventArgs A_1)
   at System.Windows.CoreInvokeHandler.InvokeEventHandler(Int32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, String eventName)}
    Handled: false

I set breakpoints in every method in the code behind, to detect if I am setting the active cell. none of my code is executed. Please advise.

Row numbering is enabled using the following context menu click event.

Regards

Babu