Update value from a model with one from another model

Question

Hello, I have a project for school to make an auction website. I managed to make the controller to Add Bids for Auction, but now I don't know how to update the "Start Price" from Auction with value from bidders: I don't know exactly but it can be done in the view only? I tried to do that, but without success. @Html.DisplayFor(model => model.DataIncheiere) @Html.DisplayNameFor(model => model.PretInitial) @Html.DisplayFor(model => model.PretInitial== model.PretInitial + model.Oferte.LastOrDefault(b =>(b.ValoareBid).ToString())) @Html.DisplayNameFor(model => model.Produse.NumeProdus)

Mario Scheeren · Answer

ViewBag.CurrentPrice = Math.Max( model.PretInitial, model.Oferte.Max (x => x.ValoareBid ) ) ... Now Display ViewBag.CurrentPrice in your Table A ViewBag is a simple Key-Value-Store only valid on this page. You Can use it to store any kind of data.

Guest User · Answer

I solve it, I already had values decimal but I wrote: ViewBag.PretCurent = Math.Max(Convert.ToDecimal(Model.PretInitial), Convert.ToDecimal(Model.Oferte.Max((x => x.ValoareBid))));

Guest User · Answer

I made PretInitial and ValoareBid both decimal and now I got this error: Same thing happens if I make both of them int or double

Mario Scheeren · Answer

Sorry, but why are you having an SByte Value? Both ( PretInitial AND ValoareBid) must be double or decimal - nothing else! SByte has a Range from 0-255 ... this is a really unconventional choice for a money value which can go up to many 1000 ...

Guest User · Answer

Thanks for the answer, now I had an error:"cannot convert "int" to "sbyte". So I added this new things: ViewBag.PretCurent = Math.Max(Convert.ToSByte(Model.PretInitial), Convert.ToSByte(Model.Oferte.Max((x => x.ValoareBid)))); But when I run the application it shows me this error: