创建asp:Chart时出错

本文关键字:出错 Chart asp 创建 | 更新日期: 2023-09-27 18:19:35

我正在尝试创建具有2个系列和2个ChartArea的Chart。我有以下代码:

 protected void DisplayData()
{
    var surveyResult = SurveyResult.ListSurveyResult(this.SurveyID);
    for (int i = 0; i < surveyResult.Count; i++)
    {
        Series series = new Series();
        series.Name = i.ToString();
        series.ChartArea = "ChartArea" + i.ToString();
        series.ChartType = SeriesChartType.Pie;
        DataPoint point = new DataPoint();
        point.SetValueY(Convert.ToInt32(surveyResult[i].Person_Count));
        point.AxisLabel = surveyResult[i].Answer;
        series.Points.Add(point);
        ChartArea chartArea = new ChartArea();
        chartArea.Name = "ChartArea" + i.ToString();
        Chart1.ChartAreas.Add(chartArea);
        Chart1.Series.Add(series);
    }
    Chart1.DataBind();
}

我收到"执行ChartImg.axd的子请求时出错。"错误。我也试着加入

  <add key="ChartImageHandler" value="storage=file;timeout=20;" />

在web.config文件中,但没有成功。有人知道这个问题是怎么回事吗?

创建asp:Chart时出错

在网上进一步搜索后,我发现我应该添加以下代码:

 <add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false" />

到web.config文件。