private static void ClearCellVisualState( Cell cell )
{
if( cell == null )
return;
ContextMenu contextMenu = cell.ContextMenu;
// Ensure to close the ContextMenu if it is open and the Cell
// is virtualized to avoid problems with ContextMenus
// defined as static resources that won't be able to reopen
// again if the Close private method is called after the
// PlacementTarget is removed from the VisualTree
if( ( contextMenu != null ) && ( contextMenu.IsOpen ) )
{
contextMenu.IsOpen = false;
}
cell.ClearContainerVisualState();
}