asp.net - 错误 : EntitySet 'Building' that was specified in page markup does not exist on the Container

Question

我在 GridView 中设置了一个 ItemTeplate:

<asp:TemplateField HeaderText="Building">
    <ItemTemplate>
        <asp:Label 
            ID="lblBuilding" 
            Text='<%# Bind("Building1.building_name") %>' 
            runat="server" />
    </ItemTemplate>
    <EditItemTemplate>
        <asp:EntityDataSource 
            ID="EditHousingDataSource" 
            runat="server" 
            EnableDelete="true" 
            ConnectionString="name=pbu_housingEntities"
            DefaultContainerName="pbu_housingEntities" 
            EnableFlattening="false" 
            EntitySetName="Building" 
            EntityTypeFilter="Building" />
        <asp:DropDownList 
            ID="ddlBuilding" 
            runat="server" 
            DataSourceID="EditHousingDataSource"
            DataTextField="building_name" 
            DataValueField="ID" />
    </EditItemTemplate>
</asp:TemplateField>

我收到错误:

EntitySet 'Building' that was specified in page markup does not exist on the Container.

有什么想法吗？ pbu_housingEntities中肯定有Building实体？

Answer 1

这里...

EntitySetName="Building"

...您不必指定实体的类名，而是指定 ObjectSet<Building> 的名称您派生的 ObjectContext 的属性。

这可能称为 Buildings .您可以在 edmx 模型配置或为派生的 ObjectContext 生成的文件中检查这一点。