Should I use ObservableCollections in my Model in M-V-VM

Posted by Bill Jeeves on Stack Overflow See other posts from Stack Overflow or by Bill Jeeves
Published on 2010-06-14T08:57:53Z Indexed on 2010/06/14 9:02 UTC
Read the original article Hit count: 160

Filed under:

mvvm

|

silverlight-4.0

I'm completely new to M-V-VM and very new to Silverlight, just reading about it for the first time today. As a sample, I am creating a model containing a list of items. My (Silverlight 4) View contains a listbox and my ViewModel will look to the model to retrieve the collection that the listbox will bind to.

My question is this. I think it would be good to use an ObservableCollection to hold the items that the listbox binds to. This would be an ObseravleCollection in the ViewModel. Should I also use this type of collection in the model, or should I use another collection type and do smoe conversion between model and viewmodel?

© Stack Overflow or respective owner

Related posts about mvvm

MVVM for Dummies

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
I think that I have found one of the best articles on MVVM that I have ever read: http://jmorrill.hjtcentral.com/Home/tabid/428/EntryId/432/MVVM-for-Tarded-Folks-Like-Me-or-MVVM-and-What-it-Means-to-Me.aspx This article sums up what is in MVVM and what is outside of MVVM. Note, when I and most other… >>> More
Drag and Drop in MVVM with ScatterView

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to implement drag and drop functionality in a Surface Application that is built using the MVVM pattern. I'm struggling to come up with a means to implement this while adhering to the MVVM pattern. Though I'm trying to do this within a Surface Application I think the solution is general… >>> More
Query on MVVM design pattern on WPF.

as seen on Stack Overflow - Search for 'Stack Overflow'
I am using MVVM architecture. I have a usercontrol UC as a View Model is a ModelData class ViewModel (UCViewModel) is binded to a usercontrol. I have three more usercontrols that is inside the usercontrol UC ( discussed above). Let's say uc1, uc2 and uc3. and the visibility of uc1 , uc2 and… >>> More
MVVM Light Toolkit - RelayCommands, DelegateCommands, and ObservableObjects

as seen on Stack Overflow - Search for 'Stack Overflow'
I just started experimenting with Laurent Bugnion's MVVM Light Toolkit. I think I'm going to really like it, but I have a couple questions. Before I get to them, I need to explain where I'm coming from. I currently use a combination of Josh Smith's MVVM Foundation and another project on Codeplex… >>> More
Learning WPF and MVVM - best approach for learning from scratch

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I've got about three years c# experience. I'd like to learn some WPF and the MVVM pattern. There are a lot of links to articles on this site but I'm getting a little overwhelmed. Would a sensible approach for a begginer to be forget mvvm for a while and just quickly learn a bit a of WPF, then… >>> More

Related posts about silverlight-4.0

Silverlight 4 Released

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
The final release of Silverlight 4 is now available. What is in the Silverlight 4 Release Silverlight 4 contains a ton of new features and capabilities. In particular we focused on three scenarios with this release: Further enhancing media support Building great business… >>> More
Performance of Silverlight Datagrid in Silverlight 3 vs Silverlight 4 on a mac

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm using Silverlight Beta 4 for a LOB application. After finding out today that I'll have to wait perhaps 4 months to be able to develop with SL4 on Visual Studio 2010 I'm thinking I need to downgrade my application to SL3 but thats another question. The problem is I'm noticing absolutely abismal… >>> More
Silverlight TV 15: Announcing Silverlight 4 RC at MIX 10

as seen on Dot net Slackers - Search for 'Dot net Slackers'
John and Adam discuss Silverlight 4 RC, following up the MIX10 keynote announcement of Silverlight 4 RC by discussing what is new and what materials have been released on the Channel 9 learning center website. They cover their picks for some of the most impactful features in Silverlight 4 RC… >>> More
Silverlight TV 14: Developing for Windows Phone 7 with Silverlight

as seen on Dot net Slackers - Search for 'Dot net Slackers'
Silverlight TV is here at MIX10 where Windows Phone 7 (WP7) and Silverlight just became the best match since peanut butter and chocolate! Mike Harsh, Program Manager for the Silverlight team working on WP7, joins John Papa to demonstrate the WP7 device and the tooling used to create applications for… >>> More
Silverlight Commands Hacks: Passing EventArgs as CommandParameter to DelegateCommand triggered by Ev

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Today I've tried to find a way how to pass EventArgs as CommandParameter to DelegateCommand triggered by EventTrigger. By reverse engineering of default InvokeCommandAction I find that blend team just ignores event args.To resolve this issue I have created my own action for triggering delegate commands… >>> More