asp.net 无法在CodeBehind上使用asp图表

我尝试使用Visual Studio（2015）提供的asp：Chart控件在我的页面中创建图表。但由于某些原因，我无法在代码隐藏页面上配置图表本身（例如，尝试为图表设置数据源）。
这是我在页面上的内容：
`

<%@ Page Title="GERM | Dashboard Analista" Language="C#" AutoEventWireup="true" CodeBehind="DashboardAnalista.aspx.cs" Inherits="WebApplication1.Auditores.Auditorias" MasterPageFile="~/Analistas.Master" Async="true" %>

<%@ Register Assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI.DataVisualization.Charting" TagPrefix="asp" %>

<asp:Content ID="BodyContent" ContentPlaceHolderID="MainContent" runat="server">
    <h3>Dashboard de Analista.</h3>
    <br />
    
    <div class="row">

        <div class="col-md-6 text-center">

            <div class="panel panel-default" runat="server">

                <div class="panel-heading">

                    <h3 class="panel-title">Gráfico de XYZ</h3>

                </div>

                <asp:Chart ID="Chart11" runat="server" DataSourceID="dschart11">
                    <titles>
                               <asp:title text="Descripción del título del gráfico" bordercolor="Red"></asp:title>
                           </titles>
                    <Series>
                        <asp:Series Name="Series1">
                            <points>
                                        <asp:datapoint axislabel="Max" yvalues="20"></asp:datapoint>
                                        <asp:datapoint axislabel="Ron" yvalues="10"></asp:datapoint>
                                        <asp:datapoint axislabel="Jack" yvalues="5"></asp:datapoint>
                                        <asp:datapoint axislabel="Harry" yvalues="30"></asp:datapoint>
                                        <asp:datapoint axislabel="Smith" yvalues="40"></asp:datapoint>
                                    </points>

                        </asp:Series>
                    </Series>
                    <ChartAreas>
                        <asp:ChartArea Name="ChartArea1"></asp:ChartArea>
                    </ChartAreas>
                </asp:Chart>

            </div>

        </div>

        <div class="col-md-6 text-center">

            <div class="panel panel-default">

                <div class="panel-heading">

                    <h3 class="panel-title">Gráfico de XYZ</h3>

                </div>

                <asp:Chart ID="Chart2" runat="server">
                    <titles>
                               <asp:title text="Descripción del título del gráfico" bordercolor="Red"></asp:title>
                           </titles>
                    <Series>
                        <asp:Series Name="Series1">
                            <points>
                                        <asp:datapoint axislabel="Max" yvalues="20"></asp:datapoint>
                                        <asp:datapoint axislabel="Ron" yvalues="10"></asp:datapoint>
                                        <asp:datapoint axislabel="Jack" yvalues="5"></asp:datapoint>
                                        <asp:datapoint axislabel="Harry" yvalues="30"></asp:datapoint>
                                        <asp:datapoint axislabel="Smith" yvalues="40"></asp:datapoint>
                                    </points>

                        </asp:Series>
                    </Series>
                    <ChartAreas>
                        <asp:ChartArea Name="ChartArea1"></asp:ChartArea>
                    </ChartAreas>
                </asp:Chart>


            </div>

        </div>

    </div>


    <div class="row">

        <div class="col-md-6 text-center">

            <div class="panel panel-default">

                <div class="panel-heading">

                    <h3 class="panel-title">Gráfico de XYZ</h3>

                </div>

                <asp:Chart ID="Chart3" runat="server">
                    <titles>
                               <asp:title text="Descripción del título del gráfico" bordercolor="Red"></asp:title>
                           </titles>
                    <Series>
                        <asp:Series Name="Series1">
                            <points>
                                        <asp:datapoint axislabel="Max" yvalues="20"></asp:datapoint>
                                        <asp:datapoint axislabel="Ron" yvalues="10"></asp:datapoint>
                                        <asp:datapoint axislabel="Jack" yvalues="5"></asp:datapoint>
                                        <asp:datapoint axislabel="Harry" yvalues="30"></asp:datapoint>
                                        <asp:datapoint axislabel="Smith" yvalues="40"></asp:datapoint>
                                    </points>

                        </asp:Series>
                    </Series>
                    <ChartAreas>
                        <asp:ChartArea Name="ChartArea1"></asp:ChartArea>
                    </ChartAreas>
                </asp:Chart>


            </div>

        </div>

        <div class="col-md-6 text-center">

            <div class="panel panel-default">

                <div class="panel-heading">

                    <h3 class="panel-title">Gráfico de XYZ</h3>

                </div>

                <asp:Chart ID="Chart4" runat="server">
                    <titles>
                               <asp:title text="Descripción del título del gráfico" bordercolor="Red"></asp:title>
                           </titles>
                    <Series>
                        <asp:Series Name="Series1">
                            <points>
                                        <asp:datapoint axislabel="Max" yvalues="20"></asp:datapoint>
                                        <asp:datapoint axislabel="Ron" yvalues="10"></asp:datapoint>
                                        <asp:datapoint axislabel="Jack" yvalues="5"></asp:datapoint>
                                        <asp:datapoint axislabel="Harry" yvalues="30"></asp:datapoint>
                                        <asp:datapoint axislabel="Smith" yvalues="40"></asp:datapoint>
                                    </points>

                        </asp:Series>
                    </Series>
                    <ChartAreas>
                        <asp:ChartArea Name="ChartArea1"></asp:ChartArea>
                    </ChartAreas>
                </asp:Chart>


            </div>

        </div>

    </div>



</asp:Content>

当我尝试修改时，假设'Chart11' intellisense不会自动完成我可以在Chart11上修改的不同属性，Chart2也会发生相同的情况这是我在“代码隐藏”上看到的：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Web.UI.DataVisualization.Charting;

namespace WebApplication1.Analistas
{
    public partial class DashboardAnalista : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                chart11 //IntelliSense is not autocompleting!! 
            }
        }

        
    }

`
我的aspx.designer显示了所有图表控件，所以这不是'runat=server'类问题中的bug。
我不知道我是否遗漏了一个引用或未配置的内容，但intellisense没有自动完成的事实对我来说很奇怪。

已更改ID以强制设计器页重新运行
删除图表并重新创建新图表，同样的情况也会发生。
已检查是否缺少“runta=server”

asp.net 无法在CodeBehind上使用asp图表

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