Post from external site to MVC controller that has typed parameters

I'm new to MVC so I was struggling with the title of the question -- not sure if there's anything already covering what I want to do.

Suppose I have a controller: FooController. It handles a set of views, all of which do the same basic thing, but use different models for various reasons. So I create an action for each model, and this works well:

[HttpPost]
public ActionResult Bar(Type1 t);
[HttpPost]
public ActionResult Bar(Type2 t);

etc...

What I want to accomplish (if possible) is to create an action that can accept a POST from a 3rd party website (in addition to the typed-views locally) and I can't seem to开发者_开发问答 figure out how to accept the data without MVC throwing an exception:

The current request for action 'Bar' on controller type 'FooController' is ambiguous between the following action methods:

And it lists the above actions.

I've tried a couple things:

• Created a method Bar(ExternalSiteType t) - Exception
• Created a method Bar(ExternalSiteParam1 p, ExternalSiteParam2 p2) - Exception
• Commented out the other actions - Success for both methods above

Any ideas how to get this to work?

EDIT: Route examples

/Foo/Bar/Type1

/Foo/Bar/Type2

/Foo/Bar/ExternalSite

I don't think

[HttpPost]
public ActionResult Bar(Type1 t);
[HttpPost]
public ActionResult Bar(Type2 t);

could work at all, even if it was from the same site. You can't have two actions with the same name unless they use different Http verbs ([HttpGet],[HttpPost] etc).

Your best best would be to create an action with a different name for the external site, convert the passed in information to Type1 and then Redirect to Bar(Type1 t). See ASP.NET MVC Redirect with model for different ways you could Redirect and preserve your complex object.