public static HolidayManagerForm GetInstance()
{
if (s_Instance == null)
{
s_Instance = new HolidayManagerForm();
s_Instance.FormClosing += OnFormClosing;
}
return(s_Instance);
}
private void btnPublicHolidays_Click(object sender, EventArgs e)
{
HolidayManagerForm form = HolidayManagerForm.GetInstance();
if (!form.Visible)
{
form.Show();
}
else
{
form.BringToFront();
}
}
public static void OnFormClosing(object sender, FormClosingEventArgs e)
{
// When the form is closed again we set the reference of the singleton to null
s_Instance = null;
}
