protected async void submit_Click(object sender, EventArgs e)
{
string date = Calendar1.SelectedDate.ToShortDateString();
string mySQLDate = date.Split('.')[2] +
'-' + date.Split('.')[1] +
'-' + date.Split('.')[0] +
" " +
time.SelectedValue;
await MySQLServer.add_session(films_id[films.SelectedIndex], mySQLDate, cost.SelectedValue);
Response.Redirect("~/Shows/", false);
}