为什么asp.net显示表名而不是表字段

时间:2019-05-07 16:55:26

标签: c# asp.net linq-to-sql

我正在一个项目上,我将3张表合并在一起,这些表已经在dbml中关联了,但是我的问题是,当我使用数据列表时,它会显示我的表名而不是正确的字段,这是大学分配,但是我已经尝试了一切我知道要做。

我试图在vs中的sql manager中单独组合它们,但我只是不理解为什么它没有显示正确的内容

 <form id="form1" runat="server">
        <div>
            <asp:LinqDataSource ID="LinqDataSource1" runat="server" ContextTypeName="assign_6_final.DataClasses1DataContext" EntityTypeName="" Select="new (CustomerID, Name)" TableName="Customers">
            </asp:LinqDataSource>
            <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True" DataSourceID="LinqDataSource1" DataTextField="Name" DataValueField="CustomerID" OnSelectedIndexChanged="Page_Load">
            </asp:DropDownList>
            <asp:DataList ID="DataList1" runat="server" DataSourceID="LinqDataSource2" Font-Bold="False" Font-Italic="False" Font-Overline="False" Font-Strikeout="False" Font-Underline="False" OnSelectedIndexChanged="DataList1_SelectedIndexChanged" OnDataBinding="DataList1_SelectedIndexChanged">
                <ItemTemplate>
                    IncidentID:
                    <asp:Label ID="IncidentIDLabel" runat="server" Text='<%# Eval("IncidentID") %>' />
                    <br />
                    DateOpened:
                    <asp:Label ID="DateOpenedLabel" runat="server" Text='<%# Eval("DateOpened") %>' />
                    <br />
                    DateClosed:
                    <asp:Label ID="DateClosedLabel" runat="server" Text='<%# Eval("DateClosed") %>' />
                    <br />
                    Title:
                    <asp:Label ID="TitleLabel" runat="server" Text='<%# Eval("Title") %>' />
                    <br />
                    Description:
                    <asp:Label ID="DescriptionLabel" runat="server" Text='<%# Eval("Description") %>' />
                    <br />
                    CustomerID:
                    <asp:Label ID="CustomerIDLabel" runat="server" Text='<%# Eval("CustomerID") %>' />
                    <br />
                    Technician:
                    <asp:Label ID="TechnicianLabel" runat="server" Text='<%# Eval("Technician") %>' />
                    <br />
                    Product:
                    <asp:Label ID="ProductLabel" runat="server" Text='<%#  Eval("Product") %>' />
                    <br />
                    <br />
                    <br />
                </ItemTemplate>
            </asp:DataList>
        </div>
        <asp:LinqDataSource ID="LinqDataSource2" runat="server" ContextTypeName="assign_6_final.DataClasses1DataContext" EntityTypeName="" Select="new (IncidentID, DateOpened, DateClosed, Title, Description, CustomerID, Technician, Product)"  TableName="Incidents" Where="CustomerID = @CustomerID">
            <WhereParameters>
                <asp:ControlParameter ControlID="DropDownList1" Name="CustomerID" PropertyName="SelectedValue" Type="Int32" />
            </WhereParameters>
        </asp:LinqDataSource>


        <asp:EntityDataSource ID="EntityDataSource1" runat="server">
        </asp:EntityDataSource>


    </form>
</body>

我期望的结果是,产品和技术人员可以正确输出最后2个项目,但它们并没有正确输出,我有点迷失了,我的老师说这是ASP中的常见问题,但我从未见过

1 个答案:

答案 0 :(得分:1)

尝试使用以下方法,等等:

 <%# DataBinder.Eval(Container.DataItem,"CustomerID") %>