Enable to SharePoint User Information List

protected void EnableUSIList(object sender, EventArgs e)
{
      try
      {
            string strFields = "";
            //Context.Response.Output.Write("Clicked Me!");
            SPSite Site = SPContext.Current.Site;
            Context.Response.Output.Write(Site + "<br/>");
            using (SPWeb Web = Site.OpenWeb())
            {
                  Web.AllowUnsafeUpdates = true;
                  SPList List = Web.Lists["User Information List"];
                  Context.Response.Output.Write(List.ToString() + "<br/>");
                  List.Hidden = false;
                  List.Update();
                  Web.AllowUnsafeUpdates = false;
                  Context.Response.Output.Write(List.Hidden.ToString() + "<br/>");

            }
      }

      catch (Exception ex)
      {
            Context.Response.Output.Write("Errors: " + ex.Message.ToString());
      }

}