asp.net C# mschart绑定datatable 有关问题

            DataTable dt = new DataTable();            dt.Columns.Add("Time", typeof(DateTime));            dt.Columns.Add("Value", typeof(int));            dt.Rows.Add(new DateTime(2012, 08, 16, 11, 05, 12), 14);            dt.Rows.Add(new DateTime(2012, 08, 16, 12, 05, 12), 14);            dt.Rows.Add(new DateTime(2012, 08, 16, 12, 30, 12), 12);            dt.Rows.Add(new DateTime(2012, 08, 16, 12, 45, 12), 11);            dt.Rows.Add(new DateTime(2012, 08, 16, 12, 59, 12), 16);            dt.Rows.Add(new DateTime(2012, 08, 16, 13, 05, 12), 13);            dt.Rows.Add(new DateTime(2012, 08, 16, 13, 10, 12), 18);            dt.Rows.Add(new DateTime(2012, 08, 16, 13, 15, 12), 15);            dt.Rows.Add(new DateTime(2012, 08, 16, 13, 20, 12), 12);            dt.Rows.Add(new DateTime(2012, 08, 16, 13, 35, 12), 13);            dt.Rows.Add(new DateTime(2012, 08, 16, 13, 50, 12), 21);            dt.Rows.Add(new DateTime(2012, 08, 16, 14, 50, 12), 21);            //格式化标签和间隔            chart1.ChartAreas[0].AxisX.LabelStyle.Format = @"{yyyy-MM-dd HH时}";                        chart1.ChartAreas[0].AxisX.IntervalType = DateTimeIntervalType.Hours;            chart1.ChartAreas[0].AxisX.Interval = 1;            //绑定数据            chart1.Series[0].Points.DataBindXY(dt.DefaultView, "Time", dt.DefaultView, "Value");