C# 无法获取getContinuation的代码

我试图从Odata源中检索整个数据列表，但我似乎无法使getContinuation正常工作。。。我目前掌握的守则如下：

var nwd = new OdataServiceReference.NorthwindEntities(new Uri("http://services.odata.org/Northwind/Northwind.svc/"));

        var res1 = nwd.Orders //response
            .OrderBy(o => o.OrderID)
            .Select(o => new
            {
                o.OrderID,
                o.Customer.CompanyName,
                o.Customer.ContactName,
                o.Employee.FirstName,
                o.Employee.LastName,
                o.Order_Details
            }) as DataServiceQuery;

        var response = (QueryOperationResponse<Order>)
                nwd.Execute<Order>(new Uri(res1.ToString()));

        //var response = res1.Execute() as QueryOperationResponse<OdataServiceReference.Order>;

        var res1List = new List<Order>(response);

        DataServiceQueryContinuation<Order> token;
        while ((token = response.GetContinuation()) != null)
        {
            response = nwd.Execute<Order>(token) as QueryOperationResponse<Order>;
            res1List.AddRange(response);
        }

我得到以下错误：

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任何帮助都会很好

尝试将顺序替换为OdataServiceReference。例如从执行到执行等顺序，看看是否有帮助。

我发誓我已经尝试过了。。。哈哈，一定是用了旧密码。谢谢