结果如何这样啊该怎么改

  SqlConnection con = dataOperate.createCon();            con.Open();            DataSet ds;            sql1 = "select userid,moterid,startdate,startengy from UserDayEngy where userid='"+ strUser +"' and moterid='" + strMoter + "'and datetime='"+startDate+"'";            SqlDataAdapter sda = new SqlDataAdapter(sql1, con);            ds = new DataSet();            sda.Fill(ds, "singlemoter");            sql2 = "select enddate,endengy from UserDayEngy where userid='" + strUser + "' and moterid='" + strMoter + "'and datetime='" + endDate + "'";            SqlDataAdapter sda1 = new SqlDataAdapter(sql2, con);            sda1.Fill(ds, "Singlemoter");            MonthsElectricityNumber.DataSource = ds;            BoundField field;            field = new BoundField();            field.DataField="userid";            field.HeaderText = "用户编号";            MonthsElectricityNumber.Columns.Add(field);            field = new BoundField();            field.DataField = "moterid";            field.HeaderText = "电表编号";            MonthsElectricityNumber.Columns.Add(field);            field = new BoundField();            field.DataField = "startdate";            field.HeaderText = "起始日期";            MonthsElectricityNumber.Columns.Add(field);            field = new BoundField();            field.DataField = "startengy";            field.HeaderText = "起始电量";            MonthsElectricityNumber.Columns.Add(field);            field = new BoundField();            field.DataField = "enddate";            field.HeaderText = "终止日期";            MonthsElectricityNumber.Columns.Add(field);            field = new BoundField();            field.DataField = "endengy";            field.HeaderText = "终止电量";            MonthsElectricityNumber.Columns.Add(field);            MonthsElectricityNumber.DataBind();