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();
    }
}