public CreateNewInvoiceViewModel()
{
NewInvoice = new DatabaseModel.Invoice();
NewInvoice.InvoiceDateWrapper = DateTime.Now;
this.PropertyChanged += CreateNewInvoiceViewModel_PropertyChanged;
}
public void Discard()
{
NewInvoice = new DatabaseModel.Invoice();
NewInvoice.InvoiceDateWrapper = DateTime.Now;
InvoiceCartonBoxSummaries = null;
}