Windows Phone 有关独立存储（一）

private const string foldername = "temp1";
private const string filename = foldername + "/address.txt";
private const string settingname = "sname"; 

1.创建文件夹

private void button1_Click(object sender, RoutedEventArgs e) 
{ 
     using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication()) 
     { 
          file.CreateDirectory(foldername); 
      } 
} 

2.检查文件夹是否存在

private void button2_Click(object sender, RoutedEventArgs e) 
{ 
     using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication()) 
     { 
          if (file.DirectoryExists(foldername)) 
          { 
               MessageBox.Show("已存在"); 
          } 
           else
          { 
               MessageBox.Show("不存在"); 
           } 
      } 
} 

3.删除目录

 private void button3_Click(object sender, RoutedEventArgs e) 
{ 
    using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication()) 
    { 
        file.DeleteDirectory(foldername); 
    } 
} 

4.创建文件

private void button4_Click(object sender, RoutedEventArgs e) 
{ 
    using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication()) 
    { 
         IsolatedStorageFileStream stream = file.CreateFile(filename); 
         stream.Close(); 
     } 
} 

5.检查文件是否存在

private void button5_Click(object sender, RoutedEventArgs e) 
{ 
     using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication()) 
     { 
          if (file.FileExists(filename)) 
          { 
              MessageBox.Show("已存在" + filename); 
          } 
          else
          { 
              MessageBox.Show("不存在"); 
          } 
     } 
} 

6.删除文件

private void button6_Click(object sender, RoutedEventArgs e) 
{ 
    using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication()) 
    { 
        file.DeleteFile(filename); 
    } 
} 

7.向文件中增加内容

private void button7_Click(object sender, RoutedEventArgs e) 
{ 
     using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication()) 
     { 
          using (IsolatedStorageFileStream stream = file.OpenFile(filename, FileMode.OpenOrCreate, FileAccess.ReadWrite)) 
          { 
              StreamWriter writer = new StreamWriter(stream); 
              writer.WriteLine(textBox1.Text); 
              writer.Close(); 
              textBox1.Text = ""; 
          }         
     } 
} 

8.读取文件内容

private void button8_Click(object sender, RoutedEventArgs e) 
{ 
     using (IsolatedStorageFile file = IsolatedStorageFile.GetUserStoreForApplication()) 
     { 
         using (IsolatedStorageFileStream stream = file.OpenFile(filename, FileMode.OpenOrCreate, FileAccess.ReadWrite)) 
         { 
             using (StreamReader  reader=new StreamReader (stream)) 
             { 
                 textBox1.Text = reader.ReadToEnd(); 
              } 
          } 
  
     } 
} 

9、程序配置信息保存

private void button9_Click(object sender, RoutedEventArgs e) 
{ 
    IsolatedStorageSettings.ApplicationSettings[settingname] = textBox2.Text; 
    IsolatedStorageSettings.ApplicationSettings.Save(); 
    textBox2.Text = ""; 
} 

10.程序配置信息读取

private void button10_Click(object sender, RoutedEventArgs e) 
{ 
    if (IsolatedStorageSettings.ApplicationSettings.Contains(settingname)) 
    { 
        textBox2.Text = IsolatedStorageSettings.ApplicationSettings[settingname].ToString(); 
    } 
}