Help with Implicit Explicit operators

This is my operator definition

public static implicit operator EventViewModel(Entry e)
        {
            EventViewModel viewModel = new EventViewModel();
            viewModel.Id = e.Id;
            viewModel.Title = e.Title;
            viewModel.StartDate = e.DateStart;
            viewModel.EndDate = e.DateEnd;
            return viewModel;
        }

public static implicit operator EventViewModel(Entry e)
        {
            EventViewModel viewModel = new EventViewModel();
            viewModel.Id = e.Id;
            viewModel.Title = e.Title;
            viewModel.StartDate = e.DateStart;
            viewModel.EndDate = e.DateEnd;
            return viewModel;
        }

I've not been able to find the exacts. With this definition, will it convert from Entry to ViewModel or ViewModel to Entry? Because, with the said implementation, following conversion doesn't work:

EventData = Context.Entries.Where(e => e.UserId == UserId);

EventData = Context.Entries.Where(e => e.UserId == UserId);

The error is Can't convert from IQueryable<Entry> to IQueryable<ViewModel>

C#•4y ago•

11 replies

Alex Frost

Help with Implicit Explicit operators

This is my operator definition

public static implicit operator EventViewModel(Entry e)
        {
            EventViewModel viewModel = new EventViewModel();
            viewModel.Id = e.Id;
            viewModel.Title = e.Title;
            viewModel.StartDate = e.DateStart;
            viewModel.EndDate = e.DateEnd;
            return viewModel;
        }

public static implicit operator EventViewModel(Entry e)
        {
            EventViewModel viewModel = new EventViewModel();
            viewModel.Id = e.Id;
            viewModel.Title = e.Title;
            viewModel.StartDate = e.DateStart;
            viewModel.EndDate = e.DateEnd;
            return viewModel;
        }

I've not been able to find the exacts. With this definition, will it convert from Entry to ViewModel or ViewModel to Entry? Because, with the said implementation, following conversion doesn't work:

EventData = Context.Entries.Where(e => e.UserId == UserId);

EventData = Context.Entries.Where(e => e.UserId == UserId);

The error is Can't convert from IQueryable<Entry> to IQueryable<ViewModel>

Help with Implicit Explicit operators

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