ODataClient响应有效负载不是有效的响应有效负载

Question

内部例外1： DataServiceQueryException：处理此请求时发生错误。

内部例外2： InvalidOperationException：响应有效内容不是有效的响应有效内容。请确保顶级元素是有效的Atom或JSON元素或属于“http://docs.oasis-open.org/odata/ns/data”命名空间。

我收到一个非常奇怪的错误，当我编译应用程序时，一旦odata客户端进入数据库就会编译它然后崩溃并出现上述错误。我已经对此做了一些研究，我可以看到它基本上是从odata请求中寻找元数据。但是，我提供了它，当我在邮差中运行uri时，它可以工作。所以我的问题是我做错了什么？

C＃：

public const string MetadataDocumentUri = "http://localhost/QuickQuoteApi/odata/$metadata";

我到达控制器并执行正常。非常感谢帮助

我正在使用Devexpres GridControl来访问数据源。

<dx:WcfCollectionViewSource x:Key="WcfCollectionViewSource" 
                                Culture="en-US" 
                                ContextType="{x:Type QuickQuote:QuickQuoteContainer}" 
                                CollectionViewType="{x:Type ListCollectionView}" 
                                Path="Companies" 
                                ServiceRoot="http://localhost/QuickQuoteApi/odata/">
        <dx:DesignDataManager.DesignData>
            <dx:DesignDataSettings RowCount="5"/>
        </dx:DesignDataManager.DesignData>
    </dx:WcfCollectionViewSource>
</dx:DXWindow.Resources>
<Grid>
    <dxg:GridControl AutoGenerateColumns="AddNew" EnableSmartColumnsGeneration="True" ItemsSource="{Binding Data, Source={StaticResource WcfCollectionViewSource}}">
        <dxg:GridControl.View>
            <dxg:TableView AllowPerPixelScrolling="True" ShowTotalSummary="True" IsSynchronizedWithCurrentItem="True"/>
        </dxg:GridControl.View>
    </dxg:GridControl>

我还添加了webapi配置

        public static void Register(HttpConfiguration config)
    {
        // Web API configuration and services

        // Web API routes
        config.MapHttpAttributeRoutes();

        config.Routes.MapHttpRoute(
            name: "DefaultApi",
            routeTemplate: "api/{controller}/{id}",
            defaults: new { id = RouteParameter.Optional }
        );

        Microsoft.OData.Edm.IEdmModel edmModel = GetEdmModel();
        config.MapODataServiceRoute("OdataRoute", "odata", edmModel);


        config.Formatters.Add(new JsonMediaTypeFormatter());
        config.Formatters.JsonFormatter.SerializerSettings.ReferenceLoopHandling =
            Newtonsoft.Json.ReferenceLoopHandling.Ignore;
        config.Formatters.JsonFormatter.SerializerSettings.Formatting = Newtonsoft.Json.Formatting.None;
    }



        private static Microsoft.OData.Edm.IEdmModel GetEdmModel()
        {
            var builder = new ODataConventionModelBuilder();
            builder.Namespace = "QuickQuote";
            builder.ContainerName = "QuickQuoteContainer";

            builder.EntitySet<Address>("Addresses");
            builder.EntitySet<Company>("Companies");
            builder.EntitySet<Connector>("Connectors");
            builder.EntitySet<Contact>("Contacts");
            builder.EntitySet<ContactType>("ContactTypes");
            builder.EntitySet<Coordinate>("Coordinates");
            builder.EntitySet<FromTo>("FromTos");
            builder.EntitySet<Manufacturer>("Manufacturer");
            builder.EntitySet<Nc>("Ncs");
            builder.EntitySet<Position>("Positions");
            builder.EntitySet<Product>("Products");
            builder.EntitySet<Question>("Questtions");
            builder.EntitySet<Quote>("Quotes");
            builder.EntitySet<Role>("Roles");
            builder.EntitySet<SingleTerminal>("SingleTerminals");
            builder.EntitySet<TotalHeader>("TotalHeaders");
            builder.EntitySet<TotalItem>("TotalItems");
            builder.EntitySet<TotalLabel>("TotalLabels");
            builder.EntitySet<User>("Users");
            builder.EntitySet<Worksheet>("Worksheets");
            builder.EntitySet<WorksheetLabel>("WorksheetLabels");

            return builder.GetEdmModel();
        }
}