c# - 设置图表以从类列表中动态绘制点

Question

所以我有一个类 List <Entry>看起来像这样:

namespace WindowsFormsApplication4.Models
{
    public class Entry
    {
        public string Segment { get; set; }
        public int Time { get; set; }
        public double Speed { get; set; }
    }
}

填充的列表有大约 70 个列表项。我在将列表作为图表的来源时遇到了问题。我希望时间值是 X 轴上的标记，速度值是所述 X 标记上的点。图片说明:

我已经尝试过发布 Here 的解决方案，没有错误，但我的图表只显示一个空白区域。 Form1中的代码是:

        chart1 = new Chart();

        chart1.DataSource = list;

        chart1.Series.Add("Speed").YValueMembers = "Speed";
        chart1.Series["Speed"].ChartType = SeriesChartType.Bar;
        chart1.Series["Speed"].XValueType = ChartValueType.Double;
        chart1.Series["Speed"].YValueType = ChartValueType.Double;

任何建议如何将列表绑定(bind)为图表的数据源？关于该主题的论坛相当稀少。

Answer 1

试试这个:

    private void Form1_Load(object sender, EventArgs e)
    {
        list = new List<Entry>
        {
            new Entry {Time = 1, Speed = 80, Segment = "Seg 1" },
            new Entry {Time = 2, Speed = 40, Segment = "Seg 2" },
            new Entry {Time = 3, Speed = 100, Segment = "Seg 3" },
            new Entry {Time = 4, Speed = 20, Segment = "Seg 4" },
            new Entry {Time = 5, Speed = 60, Segment = "Seg 5" },
        };

        chart1 = new Chart();
        chart1.Dock = DockStyle.Fill;
        chart1.ChartAreas.Add("ChartArea1");

        chart1.Series.Add("Speed");
        chart1.Series["Speed"].ChartType = SeriesChartType.Column;
        chart1.Series["Speed"].XValueMember = "Time";
        chart1.Series["Speed"].YValueMembers = "Speed";

        chart1.DataSource = list;
        chart1.DataBind();

        Controls.Add(chart1);
    }

编辑: 添加按钮 Click 事件:

    private void Form1_Load(object sender, EventArgs e)
    {
        chart1 = new Chart();
        chart1.Dock = DockStyle.Fill;
        chart1.ChartAreas.Add("ChartArea1");

        chart1.Series.Add("Speed");
        chart1.Series["Speed"].ChartType = SeriesChartType.Column;
        chart1.Series["Speed"].XValueMember = "Time";
        chart1.Series["Speed"].YValueMembers = "Speed";

        list = new List<Entry>();

        chart1.DataSource = list;

        panel1.Controls.Add(chart1);
    }

    private void button1_Click(object sender, EventArgs e)
    {
        list.Add(new Entry { Time = i, Speed = i * 10, Segment = i.ToString() });
        chart1.DataBind();

        i++;
    }