Question

我做了类似的事情已经有一段时间了，但我正在尝试创建一个派生自DataVisualization.Chart类的自定义图表类，我有以下

public class clsCustomChart:System.Windows.Forms.DataVisualization.Charting.Chart
{

    public clsCustomChart(string strChartTitle, double[] dblX, double[] dblY)
    {
        //  Create the chart

        //  Create the chart
        Chart chartReturn = new Chart();
        chartReturn.BackColor = Color.FromArgb(50, Color.DarkGray);
        chartReturn.BorderlineDashStyle = ChartDashStyle.Solid;
        chartReturn.BorderlineColor = Color.Black;
        chartReturn.Width = 300;
        chartReturn.Height = 300;

        //  Create the legend
        Legend l = new Legend("Legend");
        l.Docking = Docking.Bottom;
        l.BackColor = Color.Transparent;
        chartReturn.Legends.Add(l);

        //  Create the chart area
        ChartArea a = new ChartArea("ChartArea1");
        a.Area3DStyle.Enable3D = false;
        a.Area3DStyle.WallWidth = 0;
        a.BackColor = Color.FromArgb(100, Color.Black);

        chartReturn.ChartAreas.Add(a);

        //  Create the axis
        a.AxisX.LineColor = Color.Silver;
        a.AxisX.MajorGrid.Enabled = true;
        a.AxisX.MinorGrid.Enabled = false;
        a.AxisX.MajorGrid.LineColor = Color.FromArgb(50, Color.Black);
        a.AxisX.LabelStyle.Font = new System.Drawing.Font("Arial", 8F);

        a.AxisY.LineColor = Color.Silver;
        a.AxisY.MajorGrid.Enabled = true;
        a.AxisY.MinorGrid.Enabled = false;
        a.AxisY.MajorGrid.LineColor = Color.FromArgb(50, Color.Black);
        a.AxisY.LabelStyle.Font = new System.Drawing.Font("Arial", 8F);

        //  Chart title
        chartReturn.Titles.Add(new Title(strChartTitle));

        //  Add the data
        //  Create the data series
        Series s = new Series("IN");
        s.ChartType = SeriesChartType.Line;

        dblX.ToList<double>().ForEach(x => { s.Points.Add(x); });
        s.Color = Color.FromArgb(200, Color.Red);
        s.BorderWidth = 3;

        Series s2 = new Series("OUT");
        s2.ChartType = SeriesChartType.Line;

        dblY.ToList<double>().ForEach(x => { s2.Points.Add(x); });
        s2.Color = Color.FromArgb(200, Color.Green);
        s2.BorderWidth = 3;

        chartReturn.Series.Add(s);
        chartReturn.Series.Add(s2);

        chartReturn.SaveImage("c:/test/" + DateTime.Now.ToString("ddMMyyyy_HHmmss") + ".jpeg", ChartImageFormat.Jpeg);

    }

}

在创建图表对象时，自定义图表中的代码全部经过测试并且工作正常，并且自定义类将图表保存为图像正常。

然而，当我以表格

尝试这个时

Chart C = (Chart)new clsCustomChart("TEST",x,y);

this.Controls.Add(C);

我没有得到图表......任何人都可以建议......

TIA

Answer 1

//  Create the chart
Chart chartReturn = new Chart();

这会创建一个图表，然后您将其设置并丢弃。

将其删除并将chartReturn替换为this！

此外，您可能希望提供无参数构造函数，以防您希望通过设计器将其放置在表单上。

C＃创建自定义图表类

1 个答案: