我需要从Request.CreateResponse处置的Htt的presponseException（）？ [英] Do I need to dispose an HttpResponseException from Request.CreateResponse()?

问题描述

我有一个ApiController的请求处理方法中使用这个code：

I have this code within a request handling method of an ApiController:

if (uri != null)
{
    HttpResponseMessage r = Request.CreateResponse(HttpStatusCode.Redirect);
    r.Headers.Location = uri;
    throw new HttpResponseException(r);
}

潜在的问题是，R是永远不会处理（在我的code。至少）。结果
响应被传输到客户端之前使用，我可以在包装这一点，但以后就不会R得到处置？

The potential problem is that "r" is never disposed (in my code at least).
I could wrap this in a using, but then wouldn't "r" get disposed before the response is streamed to the client?

什么是正确的操作方法是什么？

What is the correct way to handle this?

推荐答案

所有的<一个href=\"http://www.asp.net/web-api/overview/web-api-routing-and-actions/exception-handling\">examples我见过表明你没有处置响应。

All the examples I've seen show that you do not have to dispose of the Response.

public Product GetProduct(int id)
{
  Product item = repository.Get(id);
  if (item == null)
  {
    var resp = new HttpResponseMessage(HttpStatusCode.NotFound)
    {
      Content = new StringContent(string.Format("No product with ID = {0}", id)),
      ReasonPhrase = "Product ID Not Found"
    }
    throw new HttpResponseException(resp);
  }
  return item;
}

在源$ C ​​$ C展望<一个href=\"http://aspnetwebstack.$c$cplex.com/SourceControl/latest#src/System.Web.Http/Htt$p$psponseException.cs\">Htt$p$psponseException,看来，它填充一个属性（的Htt presponseMessage响应）与价值和它的处理可能会造成的Htt presponseMessage要么造成的ObjectDisposedException或失败被传递到客户端。

Looking at the source code to HttpResponseException, it appears that it populates a Property (HttpResponseMessage Response) with that value and disposing of it would probably cause the HttpResponseMessage either cause an ObjectDisposedException or fail to be delivered to the client.

您还会注意到，在源$ C ​​$ C有一个苏pressMessage：

You'll also notice that in the source code there is a SupressMessage:

 [SuppressMessage("Microsoft.Reliability", 
  "CA2000:Dispose objects before losing scope", 
  Justification = "Instance is disposed elsewhere")]

实例配置的其他地方（这是不是指的Htt presponseMesssage，它没有实现IDisposable）。

Instance is disposed of elsewhere (this is not referring to HttpResponseMesssage, it does not implement IDisposable).

什么是正确的操作方法是什么？

What is the correct way to handle this?

我不相信任何更改您的code是必需的。

I don't believe any change to your code is required.

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