private void Addbook_Click(object sender, EventArgs e)
{
Form1 main = this.Owner as Form1;
r = new Reader(dateTimePicker1.Value, Convert.ToInt32(number_of_ticket.Text), name.Text, Otchestvo.Text, surname.Text);
main.L.Add_reader(r);
name.Clear();
Otchestvo.Clear();
surname.Clear();
number_of_ticket.Clear();
pictureBox1.Visible = true;
}
private void TextBox_MouseDoubleClick_otchestvo(object sender, MouseButtonEventArgs e)
{
Otchestvo.Clear();
}