/// 
        /// 文件夹下所有内容copy        /// 
        /// 要Copy的文件夹        /// 要复制到哪个地方        /// 是否覆盖        /// 
             private static bool CopyDirectory(string SourcePath, string DestinationPath, bool overwriteexisting)        {            bool ret = false;            try            {                SourcePath = SourcePath.EndsWith(@"\") ? SourcePath : SourcePath + @"\";                DestinationPath = DestinationPath.EndsWith(@"\") ? DestinationPath : DestinationPath + @"\";                if (Directory.Exists(SourcePath))                {                    if (Directory.Exists(DestinationPath) == false)                        Directory.CreateDirectory(DestinationPath);                    foreach (string fls in Directory.GetFiles(SourcePath))                    {                        FileInfo flinfo = new FileInfo(fls);                        flinfo.CopyTo(DestinationPath + flinfo.Name, overwriteexisting);                    }                    foreach (string drs in Directory.GetDirectories(SourcePath))                    {                        DirectoryInfo drinfo = new DirectoryInfo(drs);                        if (CopyDirectory(drs, DestinationPath + drinfo.Name, overwriteexisting) == false)                            ret = false;                    }                }                ret = true;            }            catch (Exception ex)            {                ret = false;            }            return ret;        }