WinRT知识积累2之MessageDialog应用代码

 1 private void NavigationHelper_SaveState(object sender, SaveStateEventArgs e)
 2         {
 3             // TODO: 在此处保存页面的唯一状态。
 4             ApplicationDataContainer localsetting = Windows.Storage.ApplicationData.Current.LocalSettings;
 5             if ((String)localsetting.Values["AppCourt"] == "2")
 6             {
 7                 localsetting.Values["AppCourt"] = "3";
 8                 showMessageBox();
 9             }
10             else if (localsetting.Values.ContainsKey("AppCourt"))
11             {
12                 localsetting.Values["AppCourt"] =(int.Parse((String)localsetting.Values["AppCourt"])+1).ToString();
13             }
14             else
15             {
16                 localsetting.Values["AppCourt"] = "1";
17             }
18         }
19         async void  showMessageBox()
20         {
21             MessageDialog messagedialog = new MessageDialog("给个好评鼓励开发=_=");
22             messagedialog.Commands.Add(new UICommand("好评",new UICommandInvokedHandler(this.CommandRateInvokedHandler)));
23             messagedialog.Commands.Add(new UICommand("取消"));
24             await messagedialog.ShowAsync();
25         }