刷新和清除 Oxyplot 模型

Question

我正在创建一个程序，它使用oxyplot 在btnCalculate_Click 之后创建一个绘图。我该怎么做才能在更改文本框值并单击 btnCalculate 时刷新绘图？我也有btnPrint，点击它应该清除情节？

public void btnCalculate_Click(object sender, EventArgs e)
{

    Pko = float.Parse(textBox5.Text);

    //Plotting Using Oxyplots
    OxyPlot.WindowsForms.PlotView pv = new PlotView();
    pv.Location = new Point(650, 0);
    pv.Size = new Size(900, 815);
    this.Controls.Add(pv);

    pv.Model = new PlotModel { Title = "Program" };
    pv.Model.InvalidatePlot(true);   

    //Pko line from surface to depth
    LineSeries Pkoline = new LineSeries();
    Pkoline.Color = OxyColors.Black;
    Pkoline.LineStyle = LineStyle.Solid;
    Pkoline.StrokeThickness = 1;
    Pkoline.Points.Add(new DataPoint(Pko, 0));
    Pkoline.Points.Add(new DataPoint(100, 200));
    pv.Model.Series.Add()
}


private void btnClear_Click(object sender, EventArgs e)
{

}

Answer 1

首先，您需要为 plot 定义变量，以便在不同的事件处理程序中调用它。通关剧情就是通关系列合集

private readonly PlotView _pv;


public Form1()
{
    InitializeComponent();
//moved initialization from btnCalculate_Click
    _pv = new PlotView();
    this.Controls.Add(_pv);
    _pv.Location = new Point(0, 0);
    _pv.Size = new Size(500, 500);
    _pv.Model = new PlotModel {Title = "Program"};
    _pv.Model.InvalidatePlot(true);
}

private void btnCalculate_Click(object sender, EventArgs e)
{
    // keep old code Except _pv initialization   

    _pv.Model.Series.Add(Pkoline);//typo in old code
}

private void clearBtn_Click(object sender, EventArgs e)
{
    _pv.Model.InvalidatePlot(true);
    _pv.Model.Series.Clear();        
}