在MVC3剃刀视图中呈现MSChart

时间:2011-07-27 23:13:30

标签: asp.net-mvc-3 charts mschart razor

我有一个显示MVC3网页图表的典型设置 -

以下是所有组件的代码。

控制器代码:

public ActionResult ShowChart() {

     myViewModel model = _myService.GetViewModel();
     return View(model);
}

查看型号:

using System.Collections.Generic;
using System.Web.Mvc;
using System.Web.UI.DataVisualization.Charting;

public class ViewModel {

     public List<Chart> Charts { get; set; }

}

查看:(View.cshtml)

@foreach (System.Web.UI.DataVisualization.Charting.Chart chart in Model.Charts)
{
    @chart
}

图表生成器:

这会填充视图模型。

private List<Chart> BuildCharts(List<Dummy> chartData)
    {
        var charts = new List<Chart>();
        foreach (Dummy chart in chartData)
        {
            charts.Add(BuildChart(chart));
        }

        return charts;
    }

    private Chart BuildChart(Dummy chartData)
    {
        var data = new ChartData
        {
            Title = "Chart X",
            xValues = chartData.hours,
            yValues = chartData.values
        };

        return ConfigureChart(data);
    }

    private Chart ConfigureChart(ChartData data)
    {
        Chart chart = new Chart(); 
        chart.Width = 150; 
        chart.Height = 300; 
        chart.Attributes.Add("align", "left"); 
        chart.Titles.Add(data.Title); 
        chart.ChartAreas.Add(new ChartArea());
        chart.Series.Add(new Series());
        chart.Legends.Add(new Legend("XXXX_YYY"));
        chart.Legends[0].TableStyle = LegendTableStyle.Auto;
        chart.Legends[0].Docking = Docking.Bottom;
        chart.Series[0].ChartType = SeriesChartType.Line;

        chart.Series[0].BackGradientStyle = GradientStyle.DiagonalLeft;
        chart.Series[0].BackSecondaryColor = System.Drawing.Color.LightGray;

        for (int i = 0; i < data.xValues.Length; i++)     
        {        
            string x = data.xValues[i];
            decimal y = data.yValues[i];

            int ptIdx = chart.Series[0].Points.AddXY(x, y);

            DataPoint pt = chart.Series[0].Points[ptIdx];
            pt.Url = "/Instance/Index/";
            pt.ToolTip = "Tooltip";
            pt.LegendText = "#VALX: #VALY";
            pt.LegendUrl = "/Contact/Details/";
            pt.LegendToolTip = "Click to view dummy information...";
        }

        return chart; 
    }

但是,视图中的代码 - @chart不会呈现图表。我在页面中得到的是一个字符串'System.Web.UI.DataVisualization.Charting.Chart'来代替图表图像。

有人可以告诉我这里有什么问题。如何在视图上输出图表?

谢谢!

1 个答案:

答案 0 :(得分:4)

你做不到:

@chart

Asp.Net MVC不知道如何渲染它们。您可以做的是要么将每个图表作为图像请求。请按照this tutorial

您还应将“选项A”或“选项B”部分移至editor template