protected void btnSearch_Click(object sender, EventArgs e) { DateTime beginDate = Convert.ToDateTime(txtPlanStartTime.Text.Trim()); DateTime endDate = Convert.ToDateTime(txtPlanEndTime.Text.Trim()); DataTable dt = GroupInfo.GetGroupGrainTotal(beginDate, endDate); if (dt.Rows.Count > 0) { Series series1 = chart2.Series[0]; for (int i = 0; i < dt.Rows.Count; i++) //向数据集绑定数据 { series1.Points.AddXY(Convert.ToDateTime(dt.Rows[i]["opardate"]).ToShortDateString(), dt.Rows[i]["total"].ToString()); } while (this.chart2.Series[0].Points.Count > dt.Rows.Count) { // Remove series points foreach (Series s in this.chart2.Series) { s.Points.RemoveAt(0); } } chart2.ChartAreas["ChartArea1"].AxisY.Title = "重量(单位:吨)"; chart2.ChartAreas["ChartArea1"].AxisX.Title = "截至日期"; } }