private void button1_Click(object sender, EventArgs e)
{
IOFile counter = new IOFile();
string filmName = textBox1.Text;
string genre = textBox2.Text;
int year = Convert.ToInt32(textBox3.Text);
string date = textBox4.Text;
int price = Convert.ToInt32(textBox5.Text);
string id = textBox6.Text;
counter.WriteFilmToFile(filmName, genre, year, date, price, id);
}