The view model in asp.net mvc Diaries

The view model in asp.net mvc Diaries

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(all I'm sure is These are used to move some form of data from controller to view) and perhaps inform me on what scenario must I take advantage of ViewData rather than ViewModel and vice versa

accomplishing it in the controller at least makes it testable (although not exactly like the above mentioned - you most likely need to consider an ISerializer to be a dependency so you can mock it)

The default behavior of your View system (return View();) will be to return a view Along with the very same name as the motion method from which It is known as. For instance, the About ActionResult process title in the controller is used to look for a view file named About.

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ViewModel: the ViewModel is often a “Model in the View” indicating it is an abstraction from the View that also serves in knowledge binding concerning the View and also the Model. It could be observed being a specialised facet of what could well be a Controller (in the MVC pattern) that functions as a knowledge binder/converter that changes Model info into View details and passes commands from your View to the Model.

What I don’t know is the best way to ship the information about as SomeModelView and then have the ability to use that to populate the widget and also change that to JSON.

(That features things like SelectLists. Neither your controller nor view ought to have to know how to make a SelectList to get a dropdown.)

Custom made-formed ViewModel classes can be employed each to pass information from controllers to views to render, together with that will help deal with type knowledge posted back again to some controller's motion method.

For example, to support the circumstance wherever we wish to alter the "Country" textbox within just our Edit view from staying an HTML textbox to a dropdownlist, we can update our Edit() action system to pass (in addition to a Supper object) a SelectList object which can be applied because the model of a "International locations" dropdownlist.

Presentation models typically have properties which have been other presentation models. Presentation models in many cases are made for only one-use function like to render a selected grid on an individual page.

A view file path can be provided in lieu of a view title. If making use of an complete route commencing in the application root (optionally starting up with "/" or "~/"), the .cshtml extension should be specified:

Typically have Qualities of a different foundation variety than a DTO. For example, greenback amounts may be represented as strings to allow them to have commas along with a forex symbol.

The ViewModel is really handy when you have a posh view model in asp.net mvc UI, in which data should be pulled up from a number of area models.