Calling Html.RenderPartial("~/Views/Payments/MyControl.ascx"); from a view works if Method.ascx is a control that directly inherits System.Web.Mvc.ViewUserControl.

However, if the control inherits a new class that derives from System.Web.Mvc.ViewUserControl, the call to Html.RenderPartial("~/Views/Payments/MyDerivedControl.ascx"); fails, reporting that no such view exists.

Example derived ViewUserControl:

class MyDerivedControl : System.Web.Mvc.ViewUserControl
{
    public Method()
    {
        ViewData["SomeData"] = "test";
    }
}

Is there a workaround, or is there another way I should be doing this? Perhaps an HTML helper?