private void AdminSayfa_Load(object sender, EventArgs e)
{
loggedPerson = Form1.loggedPerson;
label2.Text = loggedPerson.FirstName + " " + loggedPerson.LastName;
label5.Text = GenreHelper.TotalGenreCount().ToString();
label7.Text = PersonHelper.TotalPersonCount().ToString();
label8.Text = AuthorHelper.TotalAuthorCount().ToString();
label9.Text = BookHelper.TotalBookCount().ToString();
}