MVC EditorFor with compound model type?

Question

I would like to send a delegate or a command object as argument to an EditorFor along with the model object. I could use viewdata to send it with, but I would very much like it strongly typed. Is there any reasonable way to do this?

This is roughly what I'd like to be able to do in an editor template:

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Pair<MyModelType, TheDelegate>>" %>

But how could I add my delegate to an expression such as this?

<%= Html.EditorFor(m => m.MyModelTypeField, "ThatEditor") %>

Answer 1

You can't do this in a strongly typed manner unless you modify your view model and have the controller pass the necessary information. So

public class MyModelTypeWithDelegate
{
    public MyModelType MyModelType { get; set; }
    public TheDelegate MyModelTypeDelegate { get; set; }
}

public class MyViewModel
{
    public MyModelTypeWithDelegate MyModelTypeWithDelegate { get; set; }
}

and then:

<%= Html.EditorFor(m => m.MyModelTypeWithDelegate, "ThatEditor") %>

The other possibility is to pass it as additional viewdata but it won't be strongly typed:

<%= Html.EditorFor(m => m.MyModelTypeField, "ThatEditor", new { TheDelegate = someDelegate }) %>

and then inside your editor template:

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<MyModelType>" %>
<%
    var del = (TheDelegate)ViewData["TheDelegate"];
%>