void OnNewTitle()
{
InvoiceTitle title = new InvoiceTitle();
title.Invoice = Model;
Model.Titles.Add(title);
EditInvoiceTitleViewModel viewModel = new EditInvoiceTitleViewModel(title);
viewModel.Invoice = this;
viewModel.NewItem.Execute();
Titles.Add(viewModel);
}
protected override void LoadTitles(Invoice invoice)
{
List <EditInvoiceTitleViewModel> titles = new List <EditInvoiceTitleViewModel>();
if (invoice.Titles != null)
{
foreach (InvoiceTitle title in invoice.Titles)
{
EditInvoiceTitleViewModel viewmodel = new EditInvoiceTitleViewModel(title);
viewmodel.Invoice = this;
titles.Add(viewmodel);
}
}
Titles = new ObservableCollection <InvoiceTitleViewModel>(titles);
}
