C# error message when trying to use System.Net.Http.Post

Question

I am developing Windows 8 app. Error message "The type or namespace name 'Post' does not exist in the namespace 'System.Net.Http' (are you missing an assembly reference?)" is coming in Visual Studio 2012 when I try to execute the code

byte[] response = System.Net.Http.Post
  (
      url: "someurl",
      contentType: "application/json",
      contentLength: 32,
      content: "pqpUserName=admin&password=test@123"
  );

The code is from the URL .NET: Simplest way to send POST with data and read response

. Any help is appreciated.

This code is too old, take advantage of new toy: HttpClient http://msdn.microsoft.com/en-us/library/system.net.http.httpclient.aspx — cuongle, Feb 28 '13 at 07:26
@Cuong Le Could u provide equivalent code of HttpClient for the above code? — Ramesh, Feb 28 '13 at 09:42

score 4 · Answer 1 · answered Feb 28 '13 at 07:30

4

Add the System.Net.Http.HttpMethod namespace to your code.

answered Feb 28 '13 at 07:30

Herks

897
9
25

getting error "Non-invocable member 'System.Net.Http.HttpMethod.Post' cannot be used like a method." – Ramesh Feb 28 '13 at 09:13
2

`HttpMethod` is an enumeration, not a method, so yes, you're getting this error because you're not using it correctly. – Thorsten Dittmar Feb 28 '13 at 09:45

cuongle · Accepted Answer · 2013-02-28T10:14:18.077

1

Use HttpClient:

var client = new HttpClient();

var pairs = new List<KeyValuePair<string, string>>
                {
                    new KeyValuePair<string, string>("pqpUserName", "admin"),
                    new KeyValuePair<string, string>("password", "test@123")
                };

var content = new FormUrlEncodedContent(pairs);

var response = client.PostAsync("yourURI", content).Result;

if (response.IsSuccessStatusCode)
{}

edited Feb 28 '13 at 10:14

answered Feb 28 '13 at 09:57

cuongle

74,024
28
151
206

Could u be specific on how to get response from client.PostAsync("yourURI", content); – Ramesh Feb 28 '13 at 10:11
Hey, The above code is working in Windows store app. But, HttpClient is not available in Windows Phone SDK. Any idea about the equivalent code for the above code in Windows Phone SDK 8.0? – Ramesh Mar 04 '13 at 10:09
I have raised a new question regarding this. http://stackoverflow.com/questions/15198936/windows-phone-sdk-post-request – Ramesh Mar 04 '13 at 10:28

C# error message when trying to use System.Net.Http.Post

2 Answers2