if(lvw.SelectedItems[0].ImageIndex==1)
            {
                Send("DELE "+lvw.SelectedItems[0].Text);
                Receive();
                GetDirAndFiles("");
                msg="状态:> \t文件已删除."+CRLF;
                Font font = bigfont;
                Color color = Color.Blue;
                UpdateTXT(msg,color,font);
            }
            else
            {
                Send("RMD "+lvw.SelectedItems[0].Text);
                Receive();
                GetDirAndFiles("");
                msg="状态:> \t文件夹已删除."+CRLF;
                Font font = bigfont;
                Color color = Color.Blue;
                UpdateTXT(msg,color,font);
            }

我想问下它是怎么判断文件还是文件夹的？？

高手在哪里？？