Bu aralar dersler de örnek olsun diye webpart uygulaması yapıyorum. Bazı çıkarımlar olmadı değil. Sürü ile kontrol hazırladım. İyi kötü yazıyorum birkaç tanesini :)

//google.ascx
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="googleSearch.ascx.cs"
Inherits="googleSearch" %>
<script type="text/javascript">
   var req= N';
   function GetXmlHttpObject()
   {
      try
      {
         req = new XMLHttpRequest();
      }
      catch(e)
      {
         try
         {
            req = new ActiveXObject("Msxml2.XMLHTTP");
         }
         catch(e)
         {
            req = new ActiveXObject("Microsoft.XMLHTTP");
         }
      }
   }

   function stateChange()
   {
      document.getElementById('calImg').style.display = 'inline';
      if(req.readyState == 4)
      {
         document.getElementById('calImg').style.display = 'none';
         document.getElementById('calDiv').innerHTML = req.responseText;
      }
   }

   function search()
   {
      var url = './resources/search.aspx?text=' + document.getElementById("txtSearch").value;
      GetXmlHttpObject();
      req.onreadystatechange = stateChange;
      req.open("post",url,true);
      req.send(N');
   }
</script>
<table>
   <tr>
      <td align="center">
         <img src="images/google.gif" style="width: 200px; height: 68px" alt="google" />
      </td>
   </tr>
   <tr>
      <td align="center">
         <input id="txtSearch" style="font-family: arial, Helvetica, sans-serif; font-size: 12px;
border: 1px solid #808080" type="text" />
         <input onclick="search()" id="Button1" style="font-family: arial, Helvetica, sans-serif;
font-size: 12px; border: 1px solid gray; height: 19px; width: 66px;" type="button"
value="Ara" />
      </td>
   </tr>
   <tr>
      <td>
         <img src="images/circle.gif" id="calImg" alt="aranyor" style="display: none;" />
         <br />
         <div id="calDiv">
         </div>
      </td>
   </tr>
</table>

//search.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
   string kelime = Request["text"];
   string adres = @"http://www.google.com.tr/search?hl=tr&q=" + kelime + "&meta=";
   WebClient client = new WebClient();
   DateTime dt1 = DateTime.Now;
   string data = client.DownloadString(adres);
   DateTime dt2 = DateTime.Now;
   TimeSpan ts = dt2 - dt1;
   string pattern = "<h2 class=r>(?<Link>.*?)</h2>";
   Regex myRegex = new Regex(pattern);
   MatchCollection myCol = myRegex.Matches(data);
   int counter = 0;
   StringBuilder sb = new StringBuilder();
   sb.Append("<b>Sonuçlar</b> (<i>");
   sb.Append(ts.TotalMilliseconds);
   sb.Append(" toplam Milisaniye</i>)<br />");
   sb.Append("<table border=0 width=100% style=font-family:arial;font-size:10px;>");
   foreach (Match m in myCol)
   {
      if ((m.Groups[0].ToString().IndexOf("aramalar:")) == -1)
      {
         counter++;
         sb.Append("<tr><td width=10%>");
         sb.Append(counter.ToString());
         sb.Append("</td>");
         sb.Append("<td>");
         sb.Append(m.Groups["Link"].Value);
         sb.Append("</td></tr>");
      }
   }
   sb.Append("</table>");
   Response.Write(sb.ToString());
}