void buttonPictures_Click(object sender, EventArgs e)
{
webBrowserMain.Navigate(
"www.google.co.in/search? q="+webBrowserMain.Document.GetElementById("source").GetAttribute("value")+" &tbm=isch"
);
}
void buttonWikipedia_Click(object sender, EventArgs e)
{
webBrowserMain.Navigate(
"en.wikipedia.org/wiki/"
+ webBrowserMain.Document.GetElementById("source").GetAttribute("value")
);
}