//HyperLinkField hlf = new HyperLinkField();
        //hlf.HeaderText = "诊断";
        ////string[] canshu = new string[4] { "stationid", "datetime", "devicetypename", "objid" };
        ////hlf.DataNavigateUrlFields = canshu;
        ////hlf.DataNavigateUrlFormatString = "~/diagnose/DiagnoseGeneral.aspx?stationid={0}&datetime={1}&devicetypename={2}&objid={3}";
  hlf.DataNavigateUrlFields = new string[] { "stationid" };
  hlf.DataNavigateUrlFormatString = "~/diagnose/DiagnoseGeneral.aspx?stationid={0}";

hlf.Text = "诊断";
gv.Columns.Add(hlf);

为何传递一个参数是可以的，而我注释的传递四个参数不正确，求大侠指点。