viewmodel - w3toppers.com

Maintain state of a dynamic list of checkboxes in ASP.NET MVC

I got it working after much playing around with the various different approaches. In the view: <%string[] PostFeatures = Request.Form.GetValues(“Features”);%> <% foreach (var Feature in (ViewData[“AllPropertyFeatures”] as IEnumerable<MySolution.Models.PropertyFeature>)) { %> <input type=”checkbox” name=”Features” id=”Feature<%=Feature.PropertyFeatureID.ToString()%>” value=”<%=Feature.PropertyFeatureID%>” <%if(PostFeatures!=null) { if(PostFeatures.Contains(Feature.PropertyFeatureID.ToString())) { Response.Write(“checked=\”checked\””); } } %> /> <label for=”Feature<%=Feature.PropertyFeatureID%>”> <%=Feature.Description%></label> <% } %> In the receiving controller method: … Read more

Accessing a property in one ViewModel from another

If you want direct access to the list from an external ViewModel, then your options are to: Pass the List to the OtherVM as a constructor argument or public property. Then the OtherVM can treat it like a member. Pass the MainVM to the OtherVM as a constructor argument or public property. Then the OtherVM … Read more

MVVM ViewModel vs. MVC ViewModel

A rather challenging question to answer succinctly, but I’ll attempt it. (Bear in mind that the answers to these kinds of questions are still the subject of debate amongst developers.) In MVC, the ViewModel provides all the information necessary for a View to be rendered. The data it contains is created using data defined in … Read more

what is difference between a Model and an Entity

The definition of these terms is quite ambiguous. You will find different definitions at different places. Entity: An entity represents a single instance of your domain object saved into the database as a record. It has some attributes that we represent as columns in our tables. Model: A model typically represents a real world object … Read more

ASP.Net MVC and state – how to keep state between requests

It’s been some time since I posted the question, which was quite colored by my little experience and knowledge of MVC. Still I received some quite useful input, that eventually led me to find a solution and also gain some insight of MVC. What threw me off in the first place, was that you could … Read more

MVVMCross changing ViewModel within a MvxBindableListView

Your analysis is definitely correct about where the click event is trying to bind. There are two approaches I generally take: Use ItemClick on the List Continuing using Click but do some redirection on the ViewModel side. So…1 The Main Menu in the tutorial has a ViewModel a bit like: public class MainMenuViewModel : MvxViewModel … Read more

Why Two Classes, View Model and Domain Model?

I have found that while my domain model gets me 85% of the way to having the fields I want, it has never covered 100% of the values I want on my view. Especially when it comes to permissions and whether or not a user should have access to certain portions of the view. The … Read more

ASP.NET MVC ViewModel Pattern

This looks very similar to the recommended practice in the Wrox Professional ASP.NET MVC book, the first chapter of which is available for free from the above URL. Starting on page 100 they have a section on ViewData and ViewModels. When a Controller class decides to render an HTML response back to a client, it … Read more

Passing complex navigation parameters with MvvmCross ShowViewModel

I believe there may be some gremlins in that previous answer – will log as an issue :/ There are other possible routes to achieve this type of complex serializable object navigation still using Json and overriding parts of the framework, but actually I think that it might be better to just use your own … Read more

When do I use View Models, Partials, Templates and handle child bindings with MVC 3

When should I use View Models? Is it not recommended to use the domain? I find that my view models are copies of my domain objects, and don’t see the value… View models should always be used. You should not use your domain models in the view. View models are not exact copies of the … Read more