更新隔離存儲器中的數據

Question

我有一個代碼在隔離空間中添加了電子郵件ID和名稱。但它無法添加多個數據。另外，如果輸入的數據不正確，我該如何更新？

namespace IsoStore 
{ 

    public partial class MainPage : PhoneApplicationPage 
    { 

     // Constructor 
     public MainPage() 
     { 
      InitializeComponent(); 
      IsolatedStorageSettings appSettings = IsolatedStorageSettings.ApplicationSettings; 
     } 


     private void button1_Click(object sender, RoutedEventArgs e) 
     { 
      IsolatedStorageSettings.ApplicationSettings.Add("email", "someone@somewhere.com"); 
      IsolatedStorageSettings.ApplicationSettings.Add("name", "myname"); 
     } 

     private void button2_Click(object sender, RoutedEventArgs e) 
     { 
      textBlock1.Text = (string)IsolatedStorageSettings.ApplicationSettings["email"]; 
      textBlock2.Text = (string)IsolatedStorageSettings.ApplicationSettings["name"]; 
     } 
    } 
} 

Answer 1

盪滌你的代碼一點點對你來說，使用一個輔助方法做專賣店：

namespace IsoStore 
{ 
    public partial class MainPage : PhoneApplicationPage 
    { 
     private IsolatedStorageSettings _appSettings; 

     // Constructor 
     public MainPage() 
     { 
      InitializeComponent(); 
      _appSettings = IsolatedStorageSettings.ApplicationSettings;     
     } 


     private void button1_Click(object sender, RoutedEventArgs e) 
     { 
      SaveSetting("email", "someone@somewhere.com"); 
      SaveSetting("name", "myname"); 
     } 

     private void button2_Click(object sender, RoutedEventArgs e) 
     { 
      textBlock1.Text = (string)_appSettings["email"]; 
      textBlock2.Text = (string)_appSettings["name"]; 
     } 

     private void SaveSetting(string setting, string value) 
     { 
      if (_appSettings.Contains(setting)) 
      { 
       _appSettings[setting] = value; 
      } 
      else 
      { 
       _appSettings.Add(setting, value); 
      } 
     } 
    } 
} 

嘗試一些其他的例子讓你的頭部周圍使用IsolatedStorageSettings。

• How to: Store and Retrieve Application Settings Using Isolated Storage
• All about WP7 Isolated Storage - Store data in IsolatedStorageSettings

Answer 2

我心裏有2種選擇，您或者您的數據保存到isolatedStorageFile MSDN Library OR，這是我可以在這樣的情況下做的，你保存密鑰郵件下所有的電子郵件作爲一個字符串將電子郵件與不允許在電子郵件中的字符分開，昏迷「，」可以說，在需要時分割字符串並將其檢索到任何讓你感到舒服的東西。

private void SaveSetting(string setting, string value) 
    { 
     if (_appSettings.Contains(setting)) 
     { 
      _appSettings[settings] = _appSettings[settings] + "," + value; 
     } 
     else 
     { 
      _appSettings.Add(setting, value); 
     } 
    } 

請注意，這段代碼是從HiTech Magic的答案中複製過來的。