private void btn_Update(object sender, RoutedEventArgs e)
 {
     if (tb_Name.Text == "" || tb_Quantity.Text == "" || tb_MinimumQuantity.Text == "" || tb_PurchasePrice.Text == "")
     {
         AutoClosingMessageBox.Show("Please Enter Correct Values", "Alert", 3000);
         return;
     }
     try
     {
         ki.Name                        = tb_Name.Text;
         ki.Quantity                    = Convert.ToDouble(tb_Quantity.Text);
         ki.MinimumQuantity             = Convert.ToDouble(tb_MinimumQuantity.Text);
         ki.PurchasePrice               = Convert.ToDouble(tb_PurchasePrice.Text);
         ki.ExpiryDate                  = dp_ExpiryDate.SelectedDate;
         ki.KitchenInventoryCategory_Id = catId;
         KitchenInventory.update(ki);
         AutoClosingMessageBox.Show("Item Updated", "Success", 3000);
         Close();
         new Form_ManageKitchenInventory().Show();
     }
     catch
     {
         AutoClosingMessageBox.Show("Some Error Occured", "Alert", 3000);
         return;
     }
 }
 private void tb_Price_KeyDown_PressEnter(object sender, KeyEventArgs e)
 {
     if (dg_AllKitchenItems.SelectedItem != null)
     {
         if (e.Key == Key.Enter)
         {
             tbl_KitchenInventory ki = (tbl_KitchenInventory)dg_AllKitchenItems.SelectedItem;
             ki.PurchasePrice = Convert.ToDouble(tb_Price.Text);
             KitchenInventory.update(ki);
             initFormOperations();
         }
     }
 }