MVC Razor call to @Html.Action() in VB.NET always calls the New() Sub, even if I'm explicitly passing the model to use.

Question

I'm building a Model in my Controller that I want to pass through an ActionResult on a different Controller. So in the Controller I have:

Public Class IndexViewModel
    Sub New()
        Ribbon = New Ribbon.RibbonViewModel
        etc...
    End Sub

    Property Ribbon As Ribbon.RibbonViewModel
End Class

And then in the Razor View I make a call to render it like so:

@ModelType ANA.Inbox.IndexViewModel

<div>
    @Html.Action("Index", "Ribbon", Model.Ribbon)
</div>

which goes to the RibbonController, which looks like:

Function Index(Optional Model As RibbonViewModel = Nothing) As PartialViewResult
    If (Model Is Nothing) Then
        Model = New RibbonViewModel
    End If
    Return PartialView(Model)
End Function

Before I even hit that first If(), I'm hitting a call to RibbonViewModel's constructor to create a new one instead of using the one I'm passing. Any ideas?

Answer 1

If you are not doing anything complex in Action, it will be better to use Html.Partial method to render partial view without calling action method