How to Populate ListBoxFor in Mvc3?

Question

I have a list of type stored procedure which have an ID and a Name as data in it. i have property of int type in model and a list of same stored procedure. now i want to bind this information into ListBoxFor

in view i have written this

@Html.ListBoxFor(x => x.HobbyId, new MultiSelectList(Model.listHobby, "pkHobbyId", "Hobby"))

but i am getting an error

The parameter 'expression' must evaluate to an IEnumerable when multiple selection is allowed.

Please Help how to bind.

Answer 1

try that

@Html.ListBoxFor(x => x.HobbyId, Model.listHobby.Select(f => new SelectListItem { Text = f.Hobby, Value = f.pkHobbyId.ToString() }), new { Multiple = "multiple" }) 

listHobby is iEnumerable list on my sample

---

sorry if i mislead you, rushed to answer but you cannot get the result of the multiselect listbox into a guid or int variable (whatever type is your HoobyId is) you should have an array to grab the result like

public string[] SelectedHobbyIds { get; set; }

so there must be something wrong with your View Models so its better that u would post your view models to be checked

Answer 2

@ Chhatrapati Sharma,

In your controller, try this,

ViewData['anyName'] = new SelectList {
 Text = ,  // text from ur function
 Value = , // Value from function
 Selected = // if required
}

and in view, bind the viewdata like,

 <@Html.ListBox("docImages", ((IEnumerable<SelectListItem>)ViewData["anyName"]))

For testing, try a sample selectlist item as follows,

ViewData['anyName'] = new List<SelectListItem>{ 
                new SelectListItem {Text = "First", Value = "0"}, 
                new SelectListItem {Text = "Second"), Value = "1"}, 
                new SelectListItem {Text = "Third", Value = "2"} 
                    };

If this sample works, then check your function "_supp.listDocImages()" and make sure it return IList