从 WinForm(C#) 向网站传递参数（例如表单提要）

Question

I'm on my journey of learning C#. I was trying to create an app to get exam results by asking the user to enter his roll number.

I know I have to use httpwebrequest or something sounding similar.

Here is the source page snippet of the result.php page

<form action="resultstatus.php" method="post" name="myform" id="myform">
   <p align="center">
      <font face="Verdana, Arial, Helvetica, sans-serif" size="2">
      <span class="style6">Please enter your Application Number or Registration Number </span>
      <input type="text" name="regno" size="12" maxlength="10" />
      <input type="submit" name="submit" value="Submit" onenter = "submit" onclick="submit" />

How can I pass this roll no to the server, so that I can have an HTML page to work upon?

How can this be done for a username, password, etc?

this is what i hv done till now and it produces no result:

Byte[] Bytes;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://xvc.com/result.php");
Stream RequestStream;
HttpWebResponse Response;

Bytes = Encoding.UTF8.GetBytes("006453");
request.Method = "POST";
request.ContentLength = Bytes.Length;
request.ContentType  = "text/Html"; //Set accordingly

RequestStream = request.GetRequestStream();
RequestStream.Write(Bytes, 0, Bytes.Length);
RequestStream.Close();

Response = ( HttpWebResponse) request.GetResponse(); 
StreamReader ResponseStream = new StreamReader(Response.GetResponseStream(), Encoding.ASCII);

string Result = ResponseStream.ReadToEnd(); ResponseStream.Close(); MessageBox.Show(Result);

Answer 1

You basically have to create a HTTP POST to resultstatus.php and provide it with the roll no ( regno ).

You'll probably want to see this almost identical question and in particular this article .