public Form1()
{
InitializeComponent();
myBirthdayParty = new BirthdayParty((int)numberBirthday.Value, fancyBirthday.Checked, cakeWriting.Text);
myDinnerParty = new DinnerParty((int)numericUpDown1.Value, checkBox2.Checked, checkBox1.Checked);
DisplayDinnerCost(myDinnerParty);
DisplayBirthdayCost(myBirthdayParty);
}
private void DisplayBirthdayCost(BirthdayParty birthdayParty)
{
birthdayCost.Text = birthdayParty.CalculateCost().ToString("c");
}
private void DisplayBirthdayCost(BirthdayParty birthdayParty)
{
birthdayCost.Text = birthdayParty.CalculateCost().ToString("c");
}