如何从OkNegotiatedContentResult读取/解析内容？

Question

在我的一个API动作(PostOrder)中,我可能正在使用API​​(CancelOrder)中的另一个动作.两者都返回一个JSON格式的ResultOrderDTO类型,设置ResponseTypeAttribute为两个动作的一个,如下所示:

public class ResultOrderDTO
{
    public int Id { get; set; }
    public OrderStatus StatusCode { get; set; }
    public string Status { get; set; }
    public string Description { get; set; }
    public string PaymentCode { get; set; }
    public List<string> Issues { get; set; }
}

我需要的是ResultOrderDTO从中读取/解析响应CancelOrder,以便我可以将其用作响应PostOrder.这就是我的PostOrder代码:

// Here I call CancelOrder, another action in the same controller
var cancelResponse = CancelOrder(id, new CancelOrderDTO { Reason = CancelReason.Unpaid });

if (cancelResponse is OkNegotiatedContentResult<ResultOrderDTO>)
{
    // Here I need to read the contents of the ResultOrderDTO
}
else if (cancelResponse is InternalServerErrorResult)
{
    return ResponseMessage(Request.CreateResponse(HttpStatusCode.InternalServerError, new ResultError(ErrorCode.InternalServer)));
}

当我使用调试器时,我可以看到ResultOrderDTO它在响应中的某处(看起来像Content),如下图所示:

但是cancelResponse.Content不存在(或者至少我在将响应转换为其他内容之前无法访问它)并且我不知道如何读取/解析它Content.任何的想法？

Answer 1

只需将响应对象强制转换为OkNegotiatedContentResult<T>.Content属性是T类型的对象,在您的情况下是对象ResultOrderDTO.

if (cancelResponse is OkNegotiatedContentResult<ResultOrderDTO>)
{
    // Here's how you can do it. 
    var result = cancelResponse as OkNegotiatedContentResult<ResultOrderDTO>;
    var content = result.Content;
}