如何使用C＃双Y轴ZedGraph图形添加实时数据？ [英] How to add real-time data in a dual-Y-axis ZedGraph graph using C#?

问题描述

有关我的项目，我需要实时数据添加和更新到我的双y轴图。在Y和Y2值共享相同的X值，我创造了它了。现在我有一个功能，增加了新的点对到曲线列表

For my project, I need to add and update real-time data to my dual y-axis graph. The Y and Y2 values share the same X value, and I created it already. Now I have a function that adds the new point pairs to the curve lists.

下面是我的问题：我的Y和Y2值总是添加到的曲线列表第一条曲线。 ？我怎样才能加入到第二条曲线列表，我图的Y2值

Here is my problem: My Y and Y2 values are always added to the curve list of the first curve. How can I get the Y2 value added to the second curve list in my graph?

下面是我的函数代码：

    private void AddDataToGraph(ZedGraphControl zg1, XDate xValue, double yValue1, double yValue2)
    {
        // Make sure that the curvelist has at least one curve.
        if (zg1.GraphPane.CurveList.Count <= 0)
            return;

        // Get the first CurveItem in the graph.
        LineItem curve = zg1.GraphPane.CurveList[0] as LineItem;

        if (curve == null)
            return;

        // Get the PointPairList.
        IPointListEdit list = curve.Points as IPointListEdit;
        IPointListEdit list2 = curve.Points as IPointListEdit;

        // If this is null, it means the reference at curve.Points does not
        // support IPointListEdit, so we won't be able to modify it.
        if (list == null || list2 == null)
            return;

        // Add new data points to the graph.
        list.Add(xValue, yValue1);
        list2.Add(xValue, yValue2);

        // Force redraw.
        zg1.Invalidate();
    }

他如何能Y2值被添加到第二曲线列表？

How can he Y2 values be added to the 2nd curve list?

推荐答案

发现了一个可能的解决方案我自己。这里是我的代码更改：

Found a possible solution myself. Here are my code changes:

private void AddDataToGraph(ZedGraphControl zg1, XDate xValue, double yValue1, double yValue2)
    {
        // Make sure that the curvelist has at least one curve
        if (zg1.GraphPane.CurveList.Count <= 0)
            return;

        // Get the first CurveItem in the graph
        LineItem curve = zg1.GraphPane.CurveList[0] as LineItem;
        LineItem curve2 = zg1.GraphPane.CurveList[1] as LineItem;

        if (curve == null || curve2 == null)
            return;

        // Get the PointPairList
        IPointListEdit list = curve.Points as IPointListEdit;
        IPointListEdit list2 = curve2.Points as IPointListEdit;
        // If this is null, it means the reference at curve.Points does not
        // support IPointListEdit, so we won't be able to modify it
        if (list == null || list2 == null)
            return;

        // add new data points to the graph
        list.Add(xValue, yValue1);
        list2.Add(xValue, yValue2);

        // force redraw
        zg1.Invalidate();
    }

重要的是使用索引中的CurveList [I] 。所以，[0]是我与Y值和[1]是我与Y2值曲线等曲线。

The important thing is to use the index in the "CurveList[i]". So [0] is my curve with the Y values and [1] is my curve with the Y2 values, and so on.

我希望这有助于任何人谁拥有相同或类似的问题。

I hope this helps anybody who has the same or similar problem.

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