Question

Lets say I have two classes one base class:

public class BaseModel {

}

And a couple of children:

public class FooModel : BaseModel {

}

public class BarModel : BaseModel {

}

Now my view I would like to expect a model like this:

@model IList<BaseModel>

So that I can edit these models on one page.

However when I pass in a collection of these models in the action I get an exception saying:

The model item passed into the dictionary is of type
‘System.Collections.Generic.List1[BarModel]', but this dictionary
requires a model item of type
'System.Collections.Generic.IList1[BaseModel]’.

Like this:

var models = new List<BaseModel>(){ new BarModel(), new FooModel ()}
return View(models);

How can I achieve this?

Thanks

Answer 1

Assuming you’re not modify the model collection on the page, your page shouldn’t take IList<T>. Rather it should take IEnumerable<T>:

@model IEnumerable<BaseModel>

That should take care of things.