[Windows Phone 7] Storage

什么没有

　　现在Windwos Phone 7的数据存储得写入到独立存储空间中，有两种存储方式：1.独立文件存储；2.独立设置存储。
　　（1）独立文件存储
　　独立文件存储的使用方法与文件类似
　　写入：

//Obtain the virtual store for application
IsolatedStorageFile myStore = IsolatedStorageFile.GetUserStoreForApplication();
//Create a new folder and call it "ImageFolder"
myStore.CreateDirectory("ImageFolder");
//Create a new file and assign a StreamWriter to the store and this new file (myFile.txt)
//Also take the text contents from the txtWrite control and write it to myFile.txt
StreamWriter writeFile = new StreamWriter(new IsolatedStorageFileStream("ImageFolder\\myFile.txt", FileMode.OpenOrCreate, myStore));
writeFile.WriteLine(txtWrite.Text);
writeFile.Close();

　　读取：


     //Obtain a virtual store for application
IsolatedStorageFile myStore = IsolatedStorageFile.GetUserStoreForApplication();
//This code will open and read the contents of myFile.txt
//Add exception in case the user attempts to click “Read button first.
StreamReader readFile = null;
try
{
readFile = new StreamReader(new IsolatedStorageFileStream("ImageFolder\\myFile.txt", FileMode.Open, myStore));
string fileText = readFile.ReadLine();
//The control txtRead will display the text entered in the file
txtRead.Text = fileText;
readFile.Close();
}
catch
{
txtRead.Text = "Need to create directory and the file first.";
}
　　（2）独立设置存储

//获取独立设置存储对象
IsolatedStorageSettings settings = IsolatedStorageSettings.ApplicationSettings;
//写数据
setting["name"]="Bill";
setting["age"]=""20;
setting.save();
//读数据
string Name=setting["name"];

　　更具体的例子可以看微软SettingsSample的例子，里面有很详细的说明怎么进行独立设置存储。