#region 设置x轴滚动

      XYDiagram diagram = (XYDiagram)chartRoomUserAnalysisHis.Diagram;

      diagram.AxisX.VisualRange.Auto = false;

      //屏幕显示个数

      int VisualCount = dtSource.Rows.Count > 30 ? 30 : dtSource.Rows.Count;

      //屏幕最小值

      DateTime minTime = DateTime.Parse(dtSource.Rows[0]["GETTIME"].ToString());

      //屏幕最大值

      DateTime maxTime = DateTime.Parse(dtSource.Rows[VisualCount - 1]["GETTIME"].ToString());

      diagram.AxisX.VisualRange.MinValue = minTime;

      diagram.AxisX.VisualRange.MaxValue = maxTime;

      #endregion

 

 #region 添加X轴滚动条

    XYDiagram diagram = (XYDiagram)chartControl.Diagram;

                //屏幕显示个数

                int VisualCount = dtBackwaterTemper.Rows.Count > 30 ? 30 : dtBackwaterTemper.Rows.Count;

                //屏幕最小值

                string strMinValue = dtBackwaterTemper.Rows[0]["BUILDMETERNAME"].ToString();

                //屏幕最大值

                string strMaxValue = dtBackwaterTemper.Rows[VisualCount - 1]["BUILDMETERNAME"].ToString();

                diagram.AxisX.VisualRange.MinValue = strMinValue;

                diagram.AxisX.VisualRange.MaxValue = strMaxValue;

    #endregion