Pass data from controller to View - MVC

Question

I´m tryin to make a query to receive all data in my database to show it in my view.

but it´s not working. i can´t figured it out what is going on because i don´t get any error.

anybody can help with this pls?

thanks in advance

Controller:

public ActionResult Details(int id = 0)
            {
                Persons p= db.persons.Find(id);

                var query = from a in db.images
                            where a.Id_Person== id
                            select a.FileName;
                ViewBag.ImgRev= query;

                if (mag == null)
                {
                    return HttpNotFound();
                }

                return View(p);
            }

View:

@foreach (var p in ViewBag.ImgRev)
        { 
          <div>
            <img src="~/Files/" + @p /></div>
        }

have check it.. its null.. what do i wrong? i miss something — user2232273
– user2232273, Commented Sep 3, 2013 at 15:45

Dustin Kingen · Accepted Answer · 2013-09-03 15:52:53Z

1

The linq statement will not have evaluated before it is assigned to the ViewBag.

Try:

Controller:

ViewBag.ImgRev = query.ToList();

View:

@ {
    var imgList = ViewBag.ImgRev as IEnumerable<string>;
}

@foreach (var p in imgList)
{ 
    <div><img src="~/Files/" + @p /></div>
}

Alternative using ViewModel:

public class SomePageViewModel
{
    public Persons Persons { get; set; }
    public IEnumerable<string> Files { get; set; }
}

Controller:

...
var model = new SomePageViewModel { Persons = p, Files = query.ToList() };
return model;

View:

@foreach (var file in Model.Files)
{ 
    <div><img src="~/Files/" + @file /></div>
}

edited Sep 3, 2013 at 15:52

answered Sep 3, 2013 at 15:47

Dustin Kingen

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6 Comments

user2232273 Over a year ago

romoku where come your <Image> from?

Dustin Kingen Over a year ago

I guessed the class name.

user2232273 Over a year ago

i try your code but i get now this error: Object reference not set to an instance of an object. :Breakpoint foreach

user2232273 Over a year ago

i have set a breakpont in the controller and have check the query and still are null....

Dustin Kingen Over a year ago

Make sure it's connected to the database.

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