Comments on: ASP.NET MVC – Using Controller.UpdateModel when using a ViewModel

By: UpdateModel is not updating "deep" property

UpdateModel is not updating "deep" property — Tue, 06 Dec 2011 10:30:10 +0000

[...] to do with the fact that the reflection is not working. I went searching and stumbled upon this article. So I understand that using the prefix-parameter solves the problem. But not in my case, as the [...]

By: MVC data binding (Model)

MVC data binding (Model) — Mon, 19 Sep 2011 13:05:01 +0000

[...] http://www.joe-stevens.com/2010/02/17/asp-net-mvc-using-controller-updatemodel-when-using-a-viewmode... [...]

By: Rockshow

Rockshow — Sun, 24 Apr 2011 02:35:48 +0000

Thank you !!

By: nche

nche — Thu, 17 Mar 2011 09:10:05 +0000

thanx alot man. saved my day

By: Miles

Miles — Mon, 10 Jan 2011 16:59:58 +0000

I was having a similar problem with my ViewModel and objects contained within it.

Thanks so much!

By: Kahuna

Kahuna — Fri, 17 Dec 2010 13:40:32 +0000

Does anybody know how could I get rid of the class names, property names, view names hardcoded as strings (e.g. “Student”, “Name”, “Details” in the original post)?

This is so error-prone it makes me itch

By: Buddy Stein

Buddy Stein — Thu, 09 Dec 2010 15:03:21 +0000

Thanks, was driving me crazy.

By: Lorenzo

Lorenzo — Wed, 17 Nov 2010 12:12:10 +0000

Awesome. It had me there for a minute, glad to find this.

By: Alex

Alex — Thu, 04 Nov 2010 08:55:18 +0000

Cool, but how can I validate ViewModel with DataAnnotation?

Thanks
Bye

By: Tim

Tim — Fri, 29 Oct 2010 16:41:47 +0000

Man, I owe you hour of mt time!!!

By: Lorenzo

Lorenzo — Thu, 16 Sep 2010 09:19:23 +0000

Hi, good article – looks more or less like the problem I have except i’m also rendering a PartialView and am struggling to get my UpdateModel to work from my controller.

If you imagine you changed your titles code from:-

model.Student.TitleID, Model.Titles)%>

to something like:-

In the controller where you get the (FormCollection formValues) how would you get the title selected in a way that the UpdateModel helper will work?

Thanks

By: Radu

Radu — Mon, 06 Sep 2010 12:49:34 +0000

Thanks man.

By: Sada

Sada — Wed, 18 Aug 2010 18:33:37 +0000

Thank you very much!!!

By: Conor

Conor — Tue, 03 Aug 2010 23:23:04 +0000

This article was well organized and extremely helpful. Thanks!

By: Area080

Area080 — Fri, 09 Jul 2010 13:15:24 +0000

Thanks, Helped a lot

By: Ana

Ana — Tue, 15 Jun 2010 13:35:02 +0000

Hi! That’s what I’ve been looking for! Finaly, after 30+ google and baidu searching, this article hit the spot. Thanks a lot.

By: British Developer

British Developer — Mon, 07 Jun 2010 14:50:55 +0000

Great! Helped me a lot as it seems to be strangely undocumented anyway! Thanks

By: Steve

Steve — Thu, 20 May 2010 14:30:04 +0000

Thanks! Ran into this and have been looking for the obvious solution. Sad the examples don’t show this…

By: (david, "newb")

(david, "newb") — Fri, 14 May 2010 06:19:44 +0000

Add one more to the thanks pile!

Thanks…very useful blog

By: Joe

Joe — Thu, 06 May 2010 06:53:24 +0000

Glad it helped. It had me stumped for a while.

By: Cheny

Cheny — Wed, 05 May 2010 05:35:29 +0000

Hi! That’s what I’ve been looking for! Finaly, after 30+ google and baidu searching, this article hit the spot. Thanks a lot.

By: Justin Stolle

Justin Stolle — Wed, 28 Apr 2010 22:05:24 +0000

Thank you for this information!!

By: Joe

Joe — Wed, 14 Apr 2010 04:16:07 +0000

Hi Torsten

You should be able to do it in the same way. What problems are you getting?

By: Joe

Joe — Wed, 14 Apr 2010 03:53:33 +0000

Hi Senthil

Glad that it helped

By: Senthil

Senthil — Mon, 12 Apr 2010 03:11:21 +0000

Hi Joe,
It was really helpful to figure out ViewModel object validation issue in one of my project. Just to add some more info for anyone struggling to update deep object tree in ViewModel object validation as below…

1. e.g view model

public class ProductFormViewModel
{
private CategoryTypeService _svcCategoryType = new CategoryTypeService();
private CategoryService _svcCategory = new CategoryService();

public Product ProductView{ get; set;}
public SelectList CategoryTypes { get; set; }
public SelectList Categories { get; set; }

public ProductFormViewModel()
{
CategoryTypes = new SelectList(_svcCategoryType.GetList(), “ID”, “Name”);
Categories = new SelectList(_svcCategory.GetList(), “ID”, “Name”, null);
}
public ProductFormViewModel(Product Product)
{
ProductView = Product;
CategoryTypes = new SelectList(_svcCategoryType.GetList(), “ID”, “Name”, ProductView.Category.CategoryTypeID);
Categories = new SelectList(_svcCategory.GetList(), “ID”, “Name”, ProductView.CategoryID);
}
}

2.Product Controller “Create” sample

public ActionResult Create(FormCollection formValues)
{

ViewData["ActionFlag"] = ActionType.CREATE;
Product entityToAdd =new Product();
string[] excludePpty = {“Category” };
UpdateModel(entityToAdd ,”ProductView”,null,excludePpty,formValues.ToValueProvider());
entityToAdd.Category = _svcProduct.GetCategoryByProductCategoryID(entityToAdd.CategoryID);
if (ModelState.IsValid)
{
try
{
if (_svcProduct.Create(entityToAdd))
return RedirectToAction(“Index”);
else
return View(“Create”, new ProductFormViewModel(entityToAdd));
}
catch (Exception ex)
{
ModelState.AddModelError(“General”, ex);
return View(“Create”, new ProductFormViewModel(entityToAdd));
}
}
else
{
return View(“Create”, new ProductFormViewModel(entityToAdd));
}
}

Thanks
Senthil