C# error message when trying to use System.Net.Http.Post
<p>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</p>

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

<p>The code is from the URL <a href="http://stackoverflow.com/questions/4088625/net-simplest-way-to-send-post-with-data-and-read-response/15129678#15129678">.NET: Simplest way to send POST with data and read response</a></p>

<p>. Any help is appreciated. </p>
