web api：将数据添加到HttpResponseMessage(web api: add data to the HttpResponseMessage)

 我在我的web api中有一个动作，它返回一个HttpResponseMessage ： 
 
public async Task<HttpResponseMessage> Create([FromBody] AType payload)
{
    if (payload == null)
    {
        throw new ArgumentNullException(nameof(payload));
    }

    await Task.Delay(1);

    var t = new T { Id = 0, Name = payload.tName, Guid = Guid.NewGuid() };

    var response = new MyResponse { T = t };

    var result = new HttpResponseMessage(HttpStatusCode.OK) { Content = new ObjectContent(typeof(MyResponse), response, new JsonMediaTypeFormatter { SerializerSettings = { NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore } }) };

    return result;
}
 
 现在，我的问题是，如果发出请求并且请求的Content-Type是application/xml ，我应该使用xml formatter放置响应的主体。 
 
 有没有办法使用泛型类，让框架根据请求的内容类型决定在运行时使用哪种格式化程序？ 

I have an action in my web api that is returning a HttpResponseMessage:
 
public async Task<HttpResponseMessage> Create([FromBody] AType payload)
{
    if (payload == null)
    {
        throw new ArgumentNullException(nameof(payload));
    }

    await Task.Delay(1);

    var t = new T { Id = 0, Name = payload.tName, Guid = Guid.NewGuid() };

    var response = new MyResponse { T = t };

    var result = new HttpResponseMessage(HttpStatusCode.OK) { Content = new ObjectContent(typeof(MyResponse), response, new JsonMediaTypeFormatter { SerializerSettings = { NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore } }) };

    return result;
}
 
Now, my problem is that if a request is made and the request's Content-Type is application/xml, I should put the response's body using a xml formatter.
 
Is there a way to use a generic class and let the framework decide what formatter to use at runtime based on the request's content type?

原文：https://stackoverflow.com/questions/40677906