x轴滚动

#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