c# 复制整个文件夹的内容,Copy所有文件

        /// <summary>
        /// 文件夹下所有内容copy
        /// </summary>
        /// <param name="SourcePath">要Copy的文件夹</param>
        /// <param name="DestinationPath">要复制到哪个地方</param>
        /// <param name="overwriteexisting">是否覆盖</param>
        /// <returns></returns>
        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;
        }