ASP .NET HTML.DropDownListFor

Question

Hello, I have this line of code in my view but it doesn't work. It keep throwing this error:

The ViewData item that has the key 'Material.Modelo.Categoria.Familia_Id' is of type 'System.Int32' but must be of type 'IEnumerable'

<%= Html.DropDownListFor(model => model.Material.Modelo.Categoria.Familia_Id, Model.Familias, " -- Seleccione -- ")%>

Model.Familias is actually a seleclist and model.Material.Modelo.Categoria.Familia_Id is an integer.

Any ideas?

Thnx

Answer 1

Html.DropDownListFor expects to be passed a collection (something that imlements IEnumberable) so that it can build a drop down of these items.

You're passing it a single integer.

Assuming you have a drop down with just one item in it then add that integer to a collection of some sort and pass the collection. A List, or any other collection implementing IEnumerable, will work fine.

Check out this post...

http://stackoverflow.com/questions/1297399/populating-asp-net-mvc-dropdownlist

... for details on how to populate one of these.