/// <summary>
 /// Default Constructor
 /// </summary>
 public wndItems()
 {
     try
     {
         InitializeComponent();
         //Iniaialize ItemLogic object and set DataGrid's source
         IL = new clsItemsLogic();
         ItemDataGrid.ItemsSource = IL.Items;
     }
     catch (Exception ex)
     {
         HandleError(MethodInfo.GetCurrentMethod().DeclaringType.Name,
                     MethodInfo.GetCurrentMethod().Name, ex.Message);
     }
 }
        /// <summary>
        /// Instantiates Item window
        /// </summary>
        /// <param name="main">Main window object</param>
        public wndItem(wndMain main)
        {
            try
            {
                InitializeComponent();
                mainWindow = main;
                clsIL      = new clsItemsLogic();

                dgItems.ItemsSource = clsIL.getItems();
            }
            catch (Exception ex)
            {
                HandleError(MethodInfo.GetCurrentMethod().DeclaringType.Name,
                            MethodInfo.GetCurrentMethod().Name, ex.Message);
            }
        }