Asp.net Web Api将响应状态代码设置为数字

Question

在Asp.net Web Api中，如何使用int或字符串设置响应的状态代码，而不是StatusCode枚举？

在我的情况下，我希望返回状态代码为422＆＃34; Unprocessable Entity＆＃34;的验证错误，但是没有枚举器。

HttpResponseMessage response = Request.CreateResponse();
response.StatusCode = HttpStatusCode.UnprocessableEntity; //error, not in enum

Answer 1

您可以将任何int转换为HttpStatusCode。

response.StatusCode = (HttpStatusCode)422;

你也可以：

HttpResponseMessage response = Request.CreateResponse((HttpStatusCode)422, "Unprocessable Entity");

Answer 2

我最终为此创建了一个类：

  public class HttpStatusCodeAdditions
    {
        public const int UnprocessableEntityCode = 422;
        public static HttpStatusCodeAdditions UnprocessableEntity = new HttpStatusCodeAdditions(UnprocessableEntityCode);

        private HttpStatusCodeAdditions(int code)
        {
            Code = code;
        }
        public int Code { get; private set; }

        public static implicit operator HttpStatusCode(HttpStatusCodeAdditions addition)
        {
            return (HttpStatusCode)addition.Code;
        }
    }

可以这样使用：

response.StatusCode = HttpStatusCodeAdditions.UnprocessableEntity;

Answer 3

将您的 HttpStatusCode 转换为整数：

response.StatusCode = Convert.ToInt32(HttpStatusCode.UnprocessableEntity)