private void chartControl_ObjectSelected(object sender, HotTrackEventArgs e) { e.Cancel = false; XYDiagram xyDiagram = null; if (e.Object is XYDiagram) { xyDiagram = (XYDiagram)e.Object; } else if (e.Object is SeriesBase) { xyDiagram = (XYDiagram)(e.HitInfo.Diagram); } if (xyDiagram != null) { DiagramCoordinates coord = xyDiagram.PointToDiagram(e.HitInfo.HitPoint); DateTime pTime = coord.DateTimeArgument;//时间点 /*..其他针对该时间点的处理..*/ } }