private void btnExecute_Click(object sender, RoutedEventArgs e)
        {
            var x = this.DataContext as ItemCriteria;

            if (x != null)
            {
                x.CriteriaItem = cmboItems.SelectedItem as Item;
                if (radAdd.IsChecked == true)
                {
                    if (isValidateByControls(x) && x.IsValidate() && ItemCriteria.InsertData(x))
                    {
                        MyMessage.InsertMessage();
                        dgMain.ItemsSource = ItemCriteria.GetAllItemCriteria();
                    }
                }
                else if (radUpdate.IsChecked == true)
                {
                    if (isValidateByControls(x) && x.IsValidate() && ItemCriteria.UpdateData(x))
                    {
                        MyMessage.UpdateMessage();
                        dgMain.ItemsSource = ItemCriteria.GetAllItemCriteria();
                    }
                }
                else if (radDelete.IsChecked == true)
                {
                    if (MyMessageBox.Show("هل تريد تأكيد حذف المعيار", MessageBoxButton.YesNo) == MessageBoxResult.Yes && ItemCriteria.DeleteData(x))
                    {
                        MyMessage.DeleteMessage();
                        dgMain.ItemsSource = ItemCriteria.GetAllItemCriteria();
                    }
                }
            }
        }
        public ItemCriteriaControl()
        {
            InitializeComponent();

            cmboItems.ItemsSource = (from x in Item.AllItems orderby x.Name select x).ToList();
            this.DataContext      = new ItemCriteria();
            dgMain.ItemsSource    = ItemCriteria.GetAllItemCriteria();
        }