private void buttonCalculateInterest_Click(object sender, RoutedEventArgs e)
{
if (textBoxDuration.Text == "")
{
MessageBox.Show("Duration is empty!");
}
else
{
int duration = int.Parse(textBoxDuration.Text);
book.CalcInterest(duration);
textBoxCurrentCapital.Text = book.Capital.ToString();
}
}
private void buttonCalculateInterest_Click(object sender, RoutedEventArgs e)
{
if (textBoxDuration.Text == "")
{
MessageBox.Show("Duration is empty!");
}
else
{
if ((ClassSavingbook)listBoxBooks.SelectedItem == null)
{
MessageBox.Show("Select a Name!");
}
else
{
double duration = int.Parse(textBoxDuration.Text);
book.CalcInterest(duration);
CurrentCapital();
}
listBoxBooks.Items.Refresh();
}
}