private void UpdateCustomersButton_OnClick(object sender, RoutedEventArgs e)
{
IList selectedCustomers = CustomersDataGrid.SelectedItems;
int customersSize = selectedCustomers.Count;
for (var i = 0; i < customersSize; i++)
{
DataRowView row = (DataRowView)CustomersDataGrid.SelectedItems[i];
string textId = row["Id"].ToString();
int id = Convert.ToInt32(textId);
Client client = _client.FindCustomerById(id);
client.Nume = row["Nume"].ToString();
client.Prenume = row["Prenume"].ToString();
client.Adresa = row["Adresa"].ToString();
client.Localitate = row["Localitate"].ToString();
client.Judet = row["Judet"].ToString();
client.Telefon = row["Telefon"].ToString();
client.Email = row["Email"].ToString();
_client.UpdateClient(client);
}
CustomersTabItem_OnLoaded(sender, e);
}