Wino-Mail/Wino.Mail.ViewModels/Data/MailItemContainer.cs

using System;

namespace Wino.Mail.ViewModels.Data
{
    public class MailItemContainer
    {
        public MailItemViewModel ItemViewModel { get; set; }
        public ThreadMailItemViewModel ThreadViewModel { get; set; }

        public MailItemContainer(MailItemViewModel itemViewModel, ThreadMailItemViewModel threadViewModel) : this(itemViewModel)
        {
            ThreadViewModel = threadViewModel ?? throw new ArgumentNullException(nameof(threadViewModel));
        }

        public MailItemContainer(MailItemViewModel itemViewModel)
        {
            ItemViewModel = itemViewModel ?? throw new ArgumentNullException(nameof(itemViewModel));
        }
    }
}