Asp.net Web Api將響應狀態碼設置爲數字

Question

在Asp.net Web Api中，如何使用int或字符串設置我的響應的狀態碼，而不是StatusCode枚舉？

在我的情況，我想返回驗證錯誤狀態碼422，「不可處理的實體」，但沒有它的枚舉。

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

Answer 1

您可以將任何int轉換爲HttpStatusCode。

response.StatusCode = (HttpStatusCode)422; 

你還可以：

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

Answer 2

我結束了這個創建一個類：

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; 
     } 
    } 

它可以這樣使用：

response.StatusCode = HttpStatusCodeAdditions.UnprocessableEntity;