ValidationMessageFor for different object - asp.net-mvc

Question

I'm using mvc4, in my view I have a declaration
#model IEnumerable<UserDisplay>
on the same view I want to have a Form with "create" post for different object type name "Review"
how can I use the EditorFor and ValidationMessageFor ? cause model is of different type.
this is not working
#using (Html.BeginForm()) {
#Html.ValidationSummary(true)
<fieldset>
<legend>Review</legend>
<div class="editor-label">
#Html.LabelFor(model => model.Info)
</div>
<div class="editor-field">
#Html.EditorFor(model => model.Info)
#Html.ValidationMessageFor(model => model.Info)
</div>
<div class="editor-label">
#Html.LabelFor(model => model.FromId)
</div>
<div class="editor-field">
#Html.EditorFor(model => model.FromId)
#Html.ValidationMessageFor(model => model.FromId)
</div>
<div class="editor-label">
#Html.LabelFor(model => model.ToId)
</div>
<div class="editor-field">
#Html.EditorFor(model => model.ToId)
#Html.ValidationMessageFor(model => model.ToId)
</div>
<p>
<input type="submit" value="Create" />
</p>
</fieldset>
}

Answer 1

Create a partial view for that form that uses the #model declaration of the required type then use #Html.Partial("mySubFormView"). Don't mix model types in your views, it makes life too complicated.

Answer 2

You can use a view model containing both objects.
public class MyViewModel
{
public IEnumerable<UserDisplay> { get; set; }
public Review Review { get; set; }
}
Then your model declaration in the view becomes:
#model TheNamespace.For.MyViewModel
Which will allow you to use #Html.EditorFor and #Html.ValidationMessageFor helpers.