private void updateButton_Click(object sender, RoutedEventArgs e)
{
try
{
int x;
if (!int.TryParse(updateCatalogTextBox.Text, out x))
{
throw new Exception("Please enter a value number to update the record.");
}
updater.AddOrSubtractCopies(x);
Reset();
}
catch (Exception ex)
{
errorLabel.Content = ErrorHandler.InnermostExceptionMessage(ex);
}
}
