//设置此属性为true chartControl1.RuntimeHitTesting = true; private void ChartControl1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e) { try { ChartHitInfo hitInfo = chartControl1.CalcHitInfo(e.Location); if (hitInfo.SeriesPoint == null) { toolTip.HideHint(); return; } //图例名 string lengthName = ((DevExpress.XtraCharts.Native.IOwnedElement)hitInfo.SeriesPoint).Owner.ToString(); //点的Y轴数值 string yValue = hitInfo.SeriesPoint.Argument; //点的X轴数值 string xValue = hitInfo.SeriesPoint.Values[0].ToString(); toolTip.ShowHint(lengthName + " " + xValue + " " + yValue); } catch (Exception ex) { FileLogUtility.Error(ex); } }