以 Dictionary方式存取 IsolatedStorage

2011-07-15

之前有介紹過 IsolatedStorage 目前在 WP7 上有三種方式存取(檔案、Directory 及 LocalDataBase)

今天這篇介紹以Key-Value (字典)【Dictionary<TKey, TValue>】方式下資料儲存在IsolatedStorage

我們需要使用一個叫 IsolatedStorageSettings 的 class

namespace: System.IO.IsolatedStorage

下面為片段程式

讀取基本資料型態:

   1:    if (IsolatedStorageSettings.ApplicationSettings.Contains(userMailKey))

   2:    {

   3:       textUserMail.Text = IsolatedStorageSettings.ApplicationSettings[userMailKey].ToString();

   4:    }

儲存基本資料型態:

   1:  IsolatedStorageSettings.ApplicationSettings[userMailKey] = textUserMail.Text

也可以存取複雜型態:

   1:  public class Person {

   2:      public string UserName { get; set; }

   3:      public string Tel { get; set; }

   4:  }

   1:  var student = new Person(){UserName="Jerry Li",Tel="09124567"};

2:

3:

   4:  /*儲存*/

5:

   6:  IsolatedStorageSettings.ApplicationSettings["TheStudentKey"] = student;

7:

8:

9:

10:

11:

  12:  /*讀取*/

13:

  14:  var  student= IsolatedStorageSettings.ApplicationSettings[“TheStudentKey”] as Person;