WInforn中设置ZedGraph的焦点显示坐标格式化以及显示三个坐标数的解决办法

￡神魔★判官ぃ 2023-10-11 13:42 10阅读 0赞

## 场景 ##

Winforn中设置ZedGraph曲线图的属性、坐标轴属性、刻度属性：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/100112573][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100112573]

Winform中实现ZedGraph的多条Y轴(附源码下载)：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/100132245][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100132245]

ZedGraph设置显示坐标值

zgc.IsShowCursorValues = true;

但是在刷新曲线图之后出现了鼠标焦点出现三个坐标值

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

解决方法是在其鼠标焦点悬浮事件中格式化其要显示的值，修改为举例最近的去曲线上的点。

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## 实现 ##

//显示焦点值事件
    zgc.CursorValueEvent += zgc_CursorValueEvent;

然后在方法中

private static string zgc_CursorValueEvent(ZedGraphControl sender, GraphPane pane, Point mousePt)
            {
               
                CurveItem nearstCurve;
                int i;
                Double x = 0.0;
                Double y = 0.0;
                Global.zedGraphControl1.GraphPane.FindNearestPoint(mousePt, out nearstCurve, out i);
                if (nearstCurve!= null && nearstCurve.Points[i] != null && nearstCurve.Points[i].X != null)
                {
                     x = nearstCurve.Points[i].X;
                }
                if (nearstCurve!= null && nearstCurve.Points[i] != null && nearstCurve.Points[i].Y != null)
                {
                     y = nearstCurve.Points[i].Y;
                }
                return "X:" + x.ToString() + "  Y:" + y.ToString();
            }

### 效果 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1][]

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100112573]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100112573
[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100132245]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100132245
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191009171946676.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191009172009262.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70