private void Button_Click(object sender, RoutedEventArgs e)
{
isClickBtn = true;
renewBook = ((Button)sender).DataContext as RentBookModel;
string info = string.Format("session={0}&barcode={1}&department_id={2}&library_id={3}",App.session, renewBook.Barcode, renewBook.Department_id, renewBook.Library_id);
_userLoginUtils.RenewBook(info);
}
