/// <summary>
/// 复制文件夹及文件
/// </summary>
/// <param name="sourceFolder">原文件路径</param>
/// <param name="destFolder">目标文件路径</param>
/// <returns></returns>
public static int CopyFolder(string sourceFolder, string destFolder)
{
    try
    {
        //如果目标路径不存在,则创建目标路径
        if (!System.IO.Directory.Exists(destFolder))
        {
            System.IO.Directory.CreateDirectory(destFolder);
        }
        //得到原文件根目录下的所有文件
        string[] files = System.IO.Directory.GetFiles(sourceFolder);
        foreach (string file in files)
        {
            string name = System.IO.Path.GetFileName(file);
            string dest = System.IO.Path.Combine(destFolder, name);
            System.IO.File.Copy(file, dest);//复制文件
        }
        //得到原文件根目录下的所有文件夹
        string[] folders = System.IO.Directory.GetDirectories(sourceFolder);
        foreach (string folder in folders)
        {
            string name = System.IO.Path.GetFileName(folder);
            string dest = System.IO.Path.Combine(destFolder, name);
            CopyFolder(folder, dest);//构建目标路径,递归复制文件
        }
        return 1;
    }
    catch (Exception e)
    {
        return -1;
    }
}