public void UpdateBalance()
 {
     if (radioTotal.Checked)
     {
         decimal balance = DBMethods.CalculateBalance(UserID);
         lblBalance.Text = balance.ToString();
     }
     else if (radioToDate.Checked)
     {
         decimal balance = DBMethods.CalculateBalanceToDate(UserID);
         lblBalance.Text = balance.ToString();
     }
     else
     {
         lblBalance.Text = "How?";
     }
 }