c# - 屏蔽 ui 图表：动态生成系列？

Question

有没有办法在不提前知道有多少系列的情况下将系列添加到图表中？例如，我想在 X 轴上按月绘制不同年份的图表。每一年都会是一个系列。

我考虑过在按年份分组时绑定到 IEnumerable——并在每个组项上创建一个系列，但我无法真正想象代码。

Answer 1

我让它与自定义助手（HtmlHelper 扩展方法）一起使用。我改编了来自http://demos.shieldui.com/aspnet/aspnet-chart/programmatic-chart-creation的示例，但该示例适用于 ASP.NET Web 表单。我正在做MVC。我的解决方案涉及在帮助程序中使用 ChartBuilder<> 对象。

public static class ChartExtensions
{
    public static ChartBuilder<PropertyPivotAverageAmountPerMonth_Result> AnnualComparison(this HtmlHelper html, int id)
    {
        MyDatabaseEntities db = new MyDatabaseEntities();
        var results = db.PropertyPivotAverageAmountPerMonth(id);
        ChartBuilder<PropertyPivotAverageAmountPerMonth_Result> chart = new ChartBuilder<PropertyPivotAverageAmountPerMonth_Result>(html, results);

        chart.AxisX(axisX => axisX.CategoricalValues("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"));
        chart.PrimaryHeader(header => header.Text("Annual Cost Comparisons"));


        foreach (var year in results)
        {
            chart.DataSeries(s => s.Line()
                .CollectionAlias(year.Year.ToString())
                .Data(new object[]
                    {
                        new { x=0, y=year.C1 },
                        new { x=1, y=year.C2 },
                        new { x=2, y=year.C3 },
                        new { x=3, y=year.C4 },
                        new { x=4, y=year.C5 },
                        new { x=5, y=year.C6 },
                        new { x=6, y=year.C7 },
                        new { x=7, y=year.C8 },
                        new { x=8, y=year.C9 },
                        new { x=9, y=year.C10 },
                        new { x=10, y=year.C11 },
                        new { x=11, y=year.C12 }
                    }));
        }
        return chart;
    }