Asp.net Web Api将响应状态码设置为数字

Question

在Asp.net Web Api中，如何使用int或字符串设置我的响应的状态码，而不是StatusCode枚举？

在我的情况，我想返回验证错误状态码422，“不可处理的实体”，但没有它的枚举。

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; 

你还可以：

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

Answer 2

我结束了这个创建一个类：

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; 
     } 
    } 

它可以这样使用：

response.StatusCode = HttpStatusCodeAdditions.UnprocessableEntity;