private void updateTour_Click(object sender, EventArgs e)
{
guncelTur = (Tur)lstTours.SelectedItems[0].Tag;
TurUI turUI = new TurUI(guncelTur, 1);
this.Hide();
turUI.ShowDialog();
}
private void newTour_Click(object sender, EventArgs e)
{
TurUI turUI = new TurUI(null, 0);
turUI.ShowDialog();
}