private void btnList_Click(object sender, EventArgs e)
{
lstSehir.Items.Clear();
List <string> result = utilities.BuildList <string>("Malatya", "Ankara", "İstanbul");
foreach (var i in result)
{
lstSehir.Items.Add(i);
}
// dal.Add(new Customer { ID = 1, FirstName="Ayse", LastName="Kilic", Age = 25 });
dal.AddNew(new Customer {
ID = 1, FirstName = "Ayse", LastName = "Kilic", Age = 25
});
}