protected void LinkButtonManageShopItemsBodyTrackersInputAddClick(object sender, EventArgs e) { string shopItem = textBoxManageShopItemsBodyTrackersInputShopItem.Text; string soldCount = textBoxManageShopItemsBodyTrackersInputSoldCount.Text; if (String.IsNullOrEmpty(shopItem) || String.IsNullOrEmpty(textBoxManageShopItemsBodyTrackersInputDateTime.Text) || String.IsNullOrEmpty(soldCount)) { labelManageShopItemsStatus.Text = "Select shop item first!"; return; } Guid shopItemId = new Guid(shopItem); Tracker tracker = new Tracker() {ShopItemId = shopItemId, SoldCount = Misc.String2Number(soldCount)}; DataBase dataBase = new DataBase(); dataBase.InsertTracker(tracker); DataSet dataSet = dataBase.GetTrackers(shopItemId); PopulateTrackers(dataSet); }