如何从Silverlight 4.0中的独立存储中删除目录？

using System.IO.IsolatedStorage;

// 创建IsolatedStorageFile对象
IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication();

// 获取存储中的所有目录名称
string[] directories = isoStore.GetDirectoryNames("*");

// 遍历目录名称列表，逐个删除目录
foreach (string directory in directories)
{
    // 删除目录中的所有文件和子目录
    string[] files = isoStore.GetFileNames(Path.Combine(directory, "*"));
    foreach (string file in files)
    {
        isoStore.DeleteFile(Path.Combine(directory, file));
    }

    string[] subDirectories = isoStore.GetDirectoryNames(Path.Combine(directory, "*"));
    foreach (string subDirectory in subDirectories)
    {
        isoStore.DeleteDirectory(Path.Combine(directory, subDirectory));
    }

    // 删除目录
    isoStore.DeleteDirectory(directory);
}