private void fillRefinedBugList()
 {
     objBug = new Bugs();
     try
     {
         objBug.ProjectID = Int32.Parse(Request.QueryString["pid"].ToString());
         objBug.BID = Int32.Parse(Request.QueryString["bid"].ToString());
         dsBug = objBug.readBugsRefined();
         grdBuglist.DataSource = dsBug;
         grdBuglist.DataBind();
     }
     catch (Exception ex)
     {
         lblError.Text = ex.Message.ToString();
     }
     finally
     {
         if (dsBug != null)
         {
             dsBug.Dispose();
             dsBug = null;
         }
     }
 }