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20200708

HttpResponseMessage 摘要:
  HttpContent Content:
    Gets or sets the content of a HTTP response message.
	
  HttpResponseHeaders Headers: 
    Gets the collection of HTTP response headers.
	
  bool IsSuccessStatusCode:   
    Gets a value that indicates if the HTTP response was successful. 
	
  string ReasonPhrase:       
    Gets or sets the reason phrase which typically is sent by servers together with the status code.
	
  HttpRequestMessage RequestMessage: 
    Gets or sets the request message which led to this response message.
	
  HttpStatusCode StatusCode: 
    Gets or sets the status code of the HTTP response.
    HttpStatusCode code1 = HttpStatusCode.OK;
    int iCode = (int)StatusCode;
      200, 500..., 
	
  Version Version:           
    Gets or sets the HTTP message version.
	
  HttpResponseMessage EnsureSuccessStatusCode(): 
    Throws an exception if the IsSuccessStatusCode property for the HTTP response is false.
	

HttpResponseMessage Sample:
HttpResponseMessage.ToString():
StatusCode: 200, ReasonPhrase: 'OK', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
  access-control-allow-origin: *
  access-control-expose-headers: WWW-Authenticate,Server-Authorization
  Connection: keep-alive
  Accept-Ranges: bytes
  Cache-Control: no-cache
  Date: Wed, 08 Jul 2020 07:29:41 GMT
  Content-Length: 16
  Content-Type: application/json; charset=utf-8
}.