如何正确更新图表值？ （实时） [英] How do I correctly update my chart values? (In real time)

问题描述

我最近遇到了一个名为LiveChart的工具，并决定对其进行测试。

I recently encountered a tool called LiveChart and decided to test it out.

不幸的是，我在弄清楚如何实际更新图表值时遇到了一些问题时间。我很确定有一种干净正确的方法，但是我无法找到它。

Unfortunately I've been having some problems figuring out how to update the chart values in real time. I'm pretty sure there's a clean and correct way of doing it, but I can't seam to find it.

我希望能够通过 private void 或按钮来更新值。

I would like to be able to update the values through a private void or button.

在我的代码中，我正在使用ToolStripMenu对其进行测试。

In my code I'm testing it out with a ToolStripMenu.

[CODE]：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using LiveCharts;
using LiveCharts.WinForms;
using LiveCharts.Wpf;
using PokeShowdown_AccStats_T.Properties;
using LiveCharts.Defaults;

namespace PokeShowdown_AccStats_T
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            //int val1 = int.Parse(Settings.Default.Value1);

            var value1 = new ObservableValue(3);
            var value2 = new ObservableValue(7);
            var value3 = new ObservableValue(10);
            var value4 = new ObservableValue(2);

            //value1.Value = 5;

            cartesianChart1.Series.Add(new LineSeries 
            {
                Values = new ChartValues<ObservableValue> { value1, value2, value3, value4 },
                StrokeThickness = 4,
                StrokeDashArray = new System.Windows.Media.DoubleCollection(20),
                Stroke = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromRgb(107, 185, 69)),
                Fill = System.Windows.Media.Brushes.Transparent,
                LineSmoothness = 0,
                PointGeometry = null
            });



            cartesianChart1.Background = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromRgb(34, 46, 49));

            cartesianChart1.AxisX.Add(new Axis
            {
                IsMerged = true,
                Separator = new Separator
                {
                    StrokeThickness = 1,
                    StrokeDashArray = new System.Windows.Media.DoubleCollection(2),
                    Stroke = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromRgb(64, 79, 86))
                }
            });
            cartesianChart1.AxisY.Add(new Axis
            {
                IsMerged = true,
                Separator = new Separator
                {
                    StrokeThickness = 1.5,
                    StrokeDashArray = new System.Windows.Media.DoubleCollection(4),
                    Stroke = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromRgb(64, 79, 86))
                }
            });
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void changeValue1ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Settings.Default.Value1 = "10";
            Settings.Default.Save();
            this.Text = Settings.Default.Value1;

        }

        private void changeValue1To3ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Settings.Default.Value1 = "3";
            Settings.Default.Save();
            this.Text = Settings.Default.Value1;

        }
    }
}

推荐答案

实时图表试图使其保持简单。逻辑是使用需要绘制类型的通用集合，然后像添加/删除或更新该集合中的任何元素一样简单，然后图表将被更新。

Live-Charts tries to keep it simple. The logic is to use a generic collection with the type you need to plot, and then as easy as adding/removing or updating any element in this collection then your chart will be updated.

要回答您的问题，通常需要：

To answer your question, you normally need to:

public partial class Form1 : Form
{
    private ObservableValue value1;

    public Form1()
    {
        InitializeComponent();

        //int val1 = int.Parse(Settings.Default.Value1);

        value1 = new ObservableValue(3);
        //...

        cartesianChart1.Series.Add(new LineSeries 
        {
            Values = new ChartValues<ObservableValue> { value1, ... },
        });
    }

    private void changeValue1ToolStripMenuItem_Click(object sender, EventArgs e)
    {
        value1.Value = 10;
        Settings.Default.Value1 = "10";
        Settings.Default.Save();
        this.Text = Settings.Default.Value1;

    }
}

然后库将处理动画并更新

Then the library will handle animations and the update

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