/// <summary>
        ///Occurs when the command associated with this CommandBinding executes.
        /// </summary>
        private static void OnExecuteAdd(object sender, ExecutedRoutedEventArgs e)
        {
            var manipulatorwnd = new ManipulatorView();

            manipulatorwnd.removenormalCol.Visibility = Visibility.Collapsed;
            manipulatorwnd.removecol_Tilte.Visibility = Visibility.Collapsed;
            manipulatorwnd.ShowDialog();
        }
        /// <summary>
        ///Occurs when the command associated with this CommandBinding executes.
        /// </summary>
        private static void OnExecuteRemove(object sender, ExecutedRoutedEventArgs e)
        {
            var manipulatorwnd = new ManipulatorView();

            manipulatorwnd.addnormalCol.Visibility = Visibility.Collapsed;
            manipulatorwnd.addcolarea.Visibility   = Visibility.Collapsed;
            manipulatorwnd.Height = 165;
            manipulatorwnd.ShowDialog();
        }