Using Request.QueryString in Page_Load in SharePoint page layout

Below is an example of using the Request.QueryString collection in the Page_Load method in a SharePoint page layout. In this case we're looking for the variable named 'tab' and checking for various conditions.


try
{
  int index = System.Convert.ToInt32(Request.QueryString["tab"]);
  if (index > 1 && index < 5)
  {
    if (RadTabStrip1.Tabs[index-1].Visible)
    {
       RadTabStrip1.Tabs[index-1].Selected = true;
       RadMultiPage1.PageViews[index-1].Selected = true;
    }
  }
}
catch (Exception ex)
{
  //    Response.Write(ex.Message);
}