title: Send HTTP Request, parameter confusion
body: <p>I'm trying to send a HTTP request to a servers interface.
  But I'm really confused about how to specify the parameters I want to send to the servers interface method. What I've done so far.</p>
  
  <p>My server interface only accepts POST requests, that's why I'm using POST and asked if something is wrong with the way I use the parameters.</p>
  
  <pre><code>Dim parameters As String = "?text=test&amp;type=person"
  Dim buffer As Byte() = Encoding.UTF8.GetBytes(parameters)
  Dim WebReq As HttpWebRequest = CType(WebRequest.Create(NameRecPage), HttpWebRequest)
  'NameRecPage is the url
  
  WebReq.Credentials = New NetworkCredential(Username, Password) 'variables are defined and theier values are valid
  
  WebReq.Method = "POST"
  WebReq.ContentType = "application/x-www-form-urlencoded"
  WebReq.ContentLength = buffer.Length
  Dim PostData As Stream = WebReq.GetRequestStream()
  
  PostData.Write(buffer, 0, buffer.Length)
  PostData.Close()
  
  Dim WebResp As HttpWebResponse = DirectCast(WebReq.GetResponse(), HttpWebResponse)
  Dim Answer As Stream = WebResp.GetResponseStream()
  Dim _Answer As New StreamReader(Answer)
  
  Dim inputBuffer As String = _Answer.ReadToEnd()
  </code></pre>
  
  <p>That's my code so far and it's sending a request. But i get an error saying that the first (and i think also the second) parameter is null. </p>
  
  <p>I'm quite unsure about these two line:</p>
  
  <pre><code>Dim parameters As String = "?text=test&amp;type=person"
  WebReq.ContentType = "application/x-www-form-urlencoded"
  </code></pre>
  
  <p>Is there something wrong with my parameter syntax?</p>
  
  <p>Are these spellings correct in my content? What is content type about? What does it say and how do I determine which value to put in there?</p>
  
  <p>I don't know if thats the correct value for ContentType, actually I just want to receive some JSON fromatted data returned as string.</p>