Winform中设置ZedGraph鼠标双击获取距离最近曲线上的点的坐标值

场景

在多条曲线中，鼠标双击面板，弹窗显示距离焦点最近的坐标的值。

效果

注：

实现

双击事件绑定

zgc.DoubleClickEvent += zgc_DoubleClickEvent;

其中zgc

ZedGraphControl zgc

实现方法

private static bool zgc_DoubleClickEvent(ZedGraphControl sender, MouseEventArgs e)
        {
            PointF mousePt = new PointF(e.X, e.Y);
            CurveItem nearstCurve;
            int i ;
            Global.zedGraphControl1.GraphPane.FindNearestPoint(mousePt, out nearstCurve,out i);
            if (nearstCurve != null && nearstCurve.Points[i]!= null)
            {
                Double x = nearstCurve.Points[i].X;
                Double y = nearstCurve.Points[i].Y;
                string title = Global.zedGraphControl1.GraphPane.XAxis.Title.Text;
                DevExpress.XtraEditors.XtraMessageBox.Show("索引值：" + i + " X：" + x + " Y:" + y + " Xtitle:" + title);
            }
            return true;
        }