var client = new FtpClient(this.<strong>_options</strong>.FtpServer, this.<strong>_options</strong>.FtpUser, this.<strong>_options</strong>.FtpPassword);
//如果配置指定了端口,则使用特定端口
if (!string.IsNullOrEmpty(this._options.FtpServer) && this._options.FtpServer.Contains(":"))
{
string port = this._options.FtpServer.Split(':')[1];