ViewModel how to pass multiple models?

Question

ASP.NET

How to pass multiple models to ViewModel
1) Example of one of the models

public class NewsEntity : TableServiceEntity
    {
        public NewsEntity()
        {
            int y = 9999 - DateTime.Now.Year;
            int m = 13 - DateTime.Now.Month;            
            PartitionKey = string.Format("{0}_{1}", y,m);
            RowKey = string.Format("{0:10}_{1}", DateTime.MaxValue.Ticks - DateTime.UtcNow.Ticks, Guid.NewGuid());
                        
        }


        //Статья
        
         [DisplayName("Описание статьи")]
        public string Description { get; set; }             // Description - Описание статьи

2) An example of one from the repository

public class NewsRepository
    {
        private static CloudStorageAccount storageAccount;
        private NewsContext context;

        static NewsRepository()
        {
            storageAccount = CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue("DataConnectionString"));

            CloudTableClient.CreateTablesFromModel(
                typeof(NewsContext),
                storageAccount.TableEndpoint.AbsoluteUri,
                storageAccount.Credentials);
        }

        public NewsRepository()
        {
            this.context = new NewsContext(storageAccount.TableEndpoint.AbsoluteUri, storageAccount.Credentials);
            this.context.RetryPolicy = RetryPolicies.Retry(3, TimeSpan.FromSeconds(1));
        }



        #region CRUD Operations

        public void AddNews(NewsEntity newNews)
        {        
            newNews.ViewCount = 0;
            newNews.Votes = 0;
            newNews.Raiting = 0;
            newNews.AddedDate = DateTime.UtcNow;

            this.context.AddObject("NewsEntry", newNews);
            this.context.SaveChangesWithRetries();
        }

3) Controller example

public class HomeController : Controller
    {
        private NewsRepository _repo = new NewsRepository();
        private SlideRepository _slider = new SlideRepository();

        public ActionResult Index()
        {  
           // var model = _slider.ListSlide(); как работает с одной моделью
            Что должно быть здесь при выводе нескольких моделей? =)
            return View(model);
        }

Answer 1

Model

public class NewsViewModel{
    public IEnumerabe<NewsEntity> News{get;set;}
    public SliderEntity Slider{get;set;}
}

Controller

public ActionResult Index(){
  var model = new NewsViewModel(){
     News=_repo.NewsEntities.Where(...).AsIEnbumerable(),
     Slider=_slider.Slider.Single(...)
  };
 return View(model);
}

View

@model NewsViewModel
Слайдер
@Model.Slider
Новости
@foreach(var item in Model.News){
 ....
}

Answer 2

You can make a wrapper class for several models and pass it to the View. Or don't use a strongly typed View.

Answer 3

Well, firstly, if all NewsEntity objects are objects of the same class, or their classes are inherited from the same class, then you can do this:

@model IEnumerable<BaseEntity>

And if the models are completely different, then you can write them in the controller to the ViewBag (or ViewData):

ViewBag.NewsEntity = new NewsEntity( /* ... */ );
ViewBag.OtherEntity = new OtherEntity( /* ... */ );

And then in view'he also refer to them:ViewBag.NewsEntity....

Answer 4

From the point of view of the mvc architecture, it’s probably worth creating a ViewModel that contains everything, from the point of view of quick writing, I passed it to View Tuple<Model1,Model2,Model3>