private void EditGiveaway(object sender, RoutedEventArgs e)
{
NewGiveaway GiveawayPage = new NewGiveaway(((FrameworkElement)sender).DataContext as Giveaway);
MainWindow.NavigationContainer.Navigate(GiveawayPage);
}
private void CreateGiveaway(object sender, RoutedEventArgs e)
{
NewGiveaway GiveawayPage = new NewGiveaway(new Giveaway());
MainWindow.NavigationContainer.Navigate(GiveawayPage);
}