Put empty object in REST API via HttpClient

Question

The API I'm trying to call requires me to execute POST, but with an empty body. I am new to using the WCF Web API HttpClient API, and I can not find the write code that will make the message with an empty body. I find links to some HttpContent.CreateEmpty () method, but I don’t think it is for the HttpClient Web API API code, since I cannot find this method.

Answer 1

Use StringContent or ObjectContent that come out of HttpContent , or you can use null as HttpContent (see this comment ).

Answer 2

Did it before, just simple:

 Task<HttpResponseMessage> task = client.PostAsync(url, null); 

Answer 3

Found that:

 Task<HttpResponseMessage> task = client.PostAsync(url, null); 

Adds zero to the request body, which failed on WSO2. Replaced by:

 Task<HttpResponseMessage> task = client.PostAsync(url, new {}); 

And it worked.

Answer 4

I think this is automatic if your web method has no parameters or all of them fit into the URL pattern.

For example, this declaration sends an empty body:

  [OperationContract] [WebGet(UriTemplate = "mykewlservice/{emailAddress}", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped)] void GetStatus(string emailAddress, out long statusMask);