private void ClearButton_Click(object sender, RoutedEventArgs e) { ATMSession.RestartSessionTimer(); if (_focusedTextBox.Equals("account")) { ATMSession.RestartSessionTimer(); if (!TransferAccountTextBox.Text.Equals("")) { TransferAccountTextBox.Text = TransferAccountTextBox.Text.Substring(0, TransferAccountTextBox.Text.Length - 1); TransferAccountTextBox.Focus(); TransferAccountTextBox.Select(TransferAccountTextBox.Text.Length, 0); } } if (_focusedTextBox.Equals("amount")) { ATMSession.RestartSessionTimer(); if (!TransferAmountTextBox.Text.Equals("")) { TransferAmountTextBox.Text = TransferAmountTextBox.Text.Substring(0, TransferAmountTextBox.Text.Length - 1); TransferAmountTextBox.Focus(); TransferAmountTextBox.Select(TransferAmountTextBox.Text.Length, 0); } } }