private void button1_Click(object sender, EventArgs e)
{
string startDate = this.monthCalendar1.SelectionRange.Start.ToShortDateString();
string endDate = this.monthCalendar2.SelectionRange.Start.ToShortDateString();
int startDateDay = int.Parse(startDate[0].ToString() + startDate[1].ToString());
int startDateMonth = int.Parse(startDate[3].ToString() + startDate[4].ToString());
int startDateYear = int.Parse(startDate[6].ToString() + startDate[7].ToString() + startDate[8].ToString() + startDate[9].ToString());
int endDateDay = int.Parse(endDate[0].ToString() + endDate[1].ToString());
int endDateMonth = int.Parse(endDate[3].ToString() + endDate[4].ToString());
int endDateYear = int.Parse(endDate[6].ToString() + endDate[7].ToString() + endDate[8].ToString() + endDate[9].ToString());
DateTime date1 = new DateTime(startDateYear, startDateMonth, startDateDay);
DateTime date2 = new DateTime(endDateYear, endDateMonth, endDateDay);
try
{
Age cDate = new Age(date1);
Age diff = cDate.Count(date1, date2);
label6.Text = diff.Years.ToString();
label7.Text = diff.Months.ToString();
label8.Text = diff.Days.ToString();
}
catch (ArgumentException error)
{
MessageBox.Show(error.Message, "Warning Message!");
}
}