/// <summary>
/// 合成ftp远程全路径名，但不包含远程目录
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
public string GetFtpPathfileWithoutRemoteDirectory(string filename)
{
string remotePathfile = @"ftp://" + Ip + Kits.GetSafedPathname(filename);
return(remotePathfile);
}