How do i use an existing search textbox of an existing website and get the results?

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Javascript

HTML

PHP

Hi guys..

I would like to get some results from a website that has a search box and a button, how could i do that?

It's a news articles website in PHP and i would like to search for a value and get the titles back and use them in my c# windows application.

there are no parameters and values in the address of the website.

i have tried some things but i really don't know how to do it..

let me just mention that i am doing it for my personal use and i only want to search for one value one time a week but in an automated way and in that way when I'll have the results that i am interested of i would make my app send me an e-mail.

so far what i got from the website is this:

<form method="post" action="findnews.php">
<input align="left" size="32" name="search"/>
<input type="submit" value="new search" style="width: 80px;"/>
</form>

how could i put my own value for the search and get the results as text or something?

I am kind of a Newbie as for web coding..

I will appreciate any help..

Thank you!

Roy.

Revision:

Thanks to Abishek's advice i got someting going..
though it still seems as i have a problem.

meanwhile i am getting the source code for the page itself and not the results.

the problem may be in this line:

myWebClient.Headers.Add("search", "application/x-www-form-urlencoded");

I have tried to define this line to handle the search box on the page but i am not sure if this is the correct place to do it..

I am not really sure how to configure this line and couldn't find any material on MS sites for figuring it out..

the question now is: How do i make use of the search box?

I will appreciate if you'll have a look..
This is my C# win application..

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;

namespace WinFindNews
{
    public partial class Form1 : Form
    {
        public WebHeaderCollection Headers { get; set; }
        public Form1()
        {
            InitializeComponent();

        string uriString;
            uriString = "http://thedomain.com/findnews.php";

            // Create a new WebClient instance.
            WebClient myWebClient = new WebClient();
            string postData = "test query";
            //myWebClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
            myWebClient.Headers.Add("search", "application/x-www-form-urlencoded");

            // Display the headers in the request
            richTextBox1.AppendText("Resulting Request Headers: ");
            richTextBox1.AppendText(myWebClient.Headers.ToString());

            // Apply ASCII Encoding to obtain the string as a byte array.

            byte[] byteArray = Encoding.ASCII.GetBytes(postData);
            //Console.WriteLine("Uploading to {0} ...", uriString);
            // Upload the input string using the HTTP 1.0 POST method.
            byte[] responseArray = myWebClient.UploadData(uriString, "POST", byteArray);

            // Decode and display the response.
            //Console.WriteLine("\nResponse received was {0}",
            //Encoding.ASCII.GetString(responseArray));
            richTextBox1.AppendText(Encoding.ASCII.GetString(responseArray));
        }
        }
    }

Thank you!!!

Roy.