private void UpdateMecanicButton_OnClick(object sender, RoutedEventArgs e)
{
IList selectedMechanics = MechanicsDataGrid.SelectedItems;
int mechanicsSize = selectedMechanics.Count;
for (var i = 0; i < mechanicsSize; i++)
{
DataRowView row = (DataRowView)MechanicsDataGrid.SelectedItems[i];
string textId = row["Id"].ToString();
int id = Convert.ToInt32(textId);
Mecanic mecanic = _client.FindMecanicById(id);
mecanic.Nume = row["Nume"].ToString();
mecanic.Prenume = row["Prenume"].ToString();
_client.UpdateMecanic(mecanic);
}
MechanicsTabItem_OnLoaded(sender, e);
}