public class UserVM community int ID get; established; public string FirstName get; set; general public string LastName get; set; community bool IsAdministrator get; established; public string MothersName get; set;
(all I understand is They can be accustomed to move some kind of data from controller to view) and perhaps convey to me on what condition need to I exploit ViewData as opposed to ViewModel and vice versa
Ideal-click on the Controllers folder, increase a different class file named StudentController.cs, and replica and paste the following code. As you could see in the small print motion strategy, we populate the StudentDetailsViewModel with the expected information after which you can ship it to the corresponding view.
Incidentally, NHibernate projections turn out to be useful if a specific viewmodel wants a subset of the data from a persisted item.
One example is, we would want to alter the "Place" subject inside of our Edit and Make views from staying an HTML textbox into a dropdownlist. Rather then difficult-code the dropdown listing of region and location names from the view template, we might choose to crank out it from a summary of supported nations around the world and areas that we populate dynamically. We will require a way to move both the Evening meal item and
We can then update our Edit() motion process to develop the DinnerFormViewModel utilizing the Evening meal item we retrieve from our repository, after which you can go it to our view template:
To illustrate I have a web site that permits the modifying of a consumer's facts, so I have a ViewModel similar to this:
(That includes such things as SelectLists. Neither your controller nor view need to must understand how to make a SelectList for any dropdown.)
There also needs to certainly be a model in MVVM, but plenty of people miss The purpose of that pattern entirely and they will have only a view and also a view model. The model in MVC is analogous to your model in MVVM.
In the new this means of MVC a model isn't in which organization logic belongs. Business logic belongs in a very provider layer for an online or perhaps a desktop app making use of MVC or MVVM. The time period model describes the business objects which might be handed to/from the services layer. These definitions are vastly diverse from the initial description of view model in asp.net mvc MVC.
The title of The category is derived with the identify and site of the View file, and inherits from WebViewPage, and it is this that provides the powerful-typing and IntelliSense help and many others. If no View Model form is ready inside of a model directive, the sort that is utilized as an alternative is dynamic:
Generally existing a denormalized view of information. That is certainly, they typically Merge Qualities from many DTOs.
one @Sam 'View models usually contain the exact same Qualities as presentation models and DTO’s and for this reason they are sometimes confused just one for the other.' Does that signify they're frequently used as an alternative to presentation models, or are they intended to have the presentation models/dtos?
It won't issue in case you implicitly return the ViewResult with return View(); or explicitly pass the view identify on the View strategy with return View("");. In the two cases, view discovery lookups for the matching view file On this get: