如何堅持IsolatedStorageSettings終止應用程序

Question

，而在應用程序啓動

我使用的異常終止對backevents如何留住保存isolatedstoragesettings後：

 protected void _BackKeyPress(object sender, CancelEventArgs e) 
    { 
     if (MessageBox.Show("Do you want to close the application?", "Q", MessageBoxButton.OKCancel) != MessageBoxResult.OK) 
     { 
      e.Cancel = true; 
      System.IO.IsolatedStorage.IsolatedStorageSettings.ApplicationSettings.Add("key2", "33r4 "); 
     } 
     else 
     { 
      if (IsolatedStorageSettings.ApplicationSettings.Contains("Key")) 
     { 
      IsolatedStorageSettings.ApplicationSettings["Key"] = App.Current.ViewModel; 
     } 
     else 
     { 
      IsolatedStorageSettings.ApplicationSettings.Add("Key", App.Current.ViewModel); 
     } 
      throw new Exception("ExitApplication"); 
     } 
    } 

我試圖挽救它聲明在應用程序的視圖模型.xaml.cs，但無法在啓動時獲取其中的獨立存儲設置值。但它編譯並運行成功。

Answer 1

你需要調用IsolatedStorageSettings.Save方法：

protected void _BackKeyPress(object sender, CancelEventArgs e) 
{ 
    if (MessageBox.Show("Do you want to close the application?", "Q", MessageBoxButton.OKCancel) != MessageBoxResult.OK) 
    { 
     e.Cancel = true; 
     System.IO.IsolatedStorage.IsolatedStorageSettings.ApplicationSettings.Add("key2", "33r4 "); 
     IsolatedStorageSettings.Save(); 
    } 
    else 
    { 
     if (IsolatedStorageSettings.ApplicationSettings.Contains("Key")) 
     { 
      IsolatedStorageSettings.ApplicationSettings["Key"] = App.Current.ViewModel; 
     } 
     else 
     { 
      IsolatedStorageSettings.ApplicationSettings.Add("Key", App.Current.ViewModel); 
     } 
     IsolatedStorageSettings.Save(); 
     throw new Exception("ExitApplication"); 
    } 
}