Removal of file Extension

void Application_BeginRequest(object sender, EventArgs e)
{
  string fullUrl = Request.Url.ToString();

  if (fullUrl.Contains("/products/suiting.aspx"))
  {
    Context.RewritePath("/products.aspx?category=suiting");
  }
  else if (fullUrl.Contains("/products/jackets.aspx"))
  {
    Context.RewritePath("/products.aspx?category=jackets");
  }
}