void PostExpenses_byDate_Categorized()
 {
     try
     {
         string start = txtstartdate.Text + " 12:00:01 AM";
         string end   = txtenddate.Text + " 11:59:00 PM";
         GridView1.DataSource = ClassDataManager.view_Expenses_Categorized_bydate(double.Parse(lblRecordsID.Text), start, end);
         GridView1.DataBind();
     }
     catch (Exception)
     {
         //throw;
         Response.Redirect("Login.aspx");
     }
 }