private void FormLoanChangeView_Load(object sender, EventArgs e)
 {
     if (dataSource == null)
     {
         DateTime dt = DateTime.Now;
         DataSource = LoanChangeVwServices.List(new Db(DbServices.ConnectionString));
         slblEllapsedTimeValue.Text = (DateTime.Now.Subtract(dt).TotalMilliseconds / 1000).ToString();
     }
 }