WPF Quick Recipes - Dialogs

using System.Windows.Input;
using WpfCommon;

namespace DialogBehaviorApp
{
    public sealed class InvoiceViewModel
    {
        public bool IsApproved { get; set; }

        public string PaymentTerms
        {
            get
            {
                return "Payment terms";
            }
        }

        private ICommand approve;

        public ICommand Approve
        {
            get
            {
                return approve ?? (approve = new DelegateCommand(
                    a =>
                    {
                        IsApproved = true;
                        EventAggregator<InvoiceReviewedEvent>.Broadcast();
                    }));
            }
        }

        private ICommand reject;

        public ICommand Reject
        {
            get
            {
                return reject ?? (reject = new DelegateCommand(
                    a =>
                    {
                        IsApproved = false;
                        EventAggregator<InvoiceReviewedEvent>.Broadcast();
                    }));
            }
        }
    }
}