C#备份收藏夹代码

//添加系统引用

using System.IO;

private void 备份收藏夹ToolStripMenuItem_Click(object sender, EventArgs e)
        {

            string BackupFavoritePath;
            string SystemFavoritePath = GetSystemFavoritePath();
            FolderBrowserDialog myfolderBrowserDialog = new FolderBrowserDialog();
            myfolderBrowserDialog.RootFolder = Environment.SpecialFolder.Desktop;
            if (myfolderBrowserDialog.ShowDialog() == DialogResult.OK)
            {
                if (myfolderBrowserDialog.SelectedPath != "")
                {
                    BackupFavoritePath = myfolderBrowserDialog.SelectedPath;
                    CopyDir(SystemFavoritePath, BackupFavoritePath);

                 }
                else
                {
                    return;
                }
            }
        }

        /// <summary>
        /// 从注册表获取收藏夹路径
        /// </summary>
        /// <returns></returns>
        private static string GetSystemFavoritePath()
        {
            string strSystemFavoritePath = "";
            RegistryKey hklm = Registry.CurrentUser;
            RegistryKey software = hklm.OpenSubKey(@"Software/Microsoft/Windows/CurrentVersion/Explorer/Shell Folders", true);
            if (software == null)
            {
                strSystemFavoritePath = "读取失败";
            }
            else
            {
                strSystemFavoritePath = software.GetValue("Favorites").ToString();
            }
            return strSystemFavoritePath;
        }

        /// <summary>
        /// 循环递归拷贝目录文件函数
        /// </summary>
        /// <param name="sourcePath"></param>
        /// <param name="targetPath"></param>
        private void CopyDir(string sourcePath, string targetPath)
        {
            try
            {
                // 检查目标目录是否以目录分割字符结束如果不是则添加之
                if (targetPath[targetPath.Length - 1] != System.IO.Path.DirectorySeparatorChar)
                {
                    targetPath += System.IO.Path.DirectorySeparatorChar;
                }

                // 判断目标目录是否存在如果不存在则新建之
                if (!System.IO.Directory.Exists(targetPath))
                {
                    System.IO.Directory.CreateDirectory(targetPath);
                }

                // 得到源目录的文件列表，该里面是包含文件以及目录路径的一个数组
                // 如果你指向copy目标文件下面的文件而不包含目录请使用下面的方法
                // string[] fileList = Directory.GetFiles(sourcePath);
                string[] fileList = System.IO.Directory.GetFileSystemEntries(sourcePath);

                // 遍历所有的文件和目录
                foreach (string file in fileList)
                {
                    // 先当作目录处理如果存在这个目录就递归Copy该目录下面的文件
                    if (System.IO.Directory.Exists(file))
                    {
                        CopyDir(file, targetPath + System.IO.Path.GetFileName(file));
                    }

                    // 否则直接Copy文件
                    else
                    {
                        System.IO.File.Copy(file, targetPath + System.IO.Path.GetFileName(file), true);
                    }
                }
            }

            catch (Exception e)
            {
                throw;
            }
        }