Equivilent of multiple views on SDI forms (vswap) ?

[jon]

Using Visual C++ and MFC, one could generate a very nice MMI using
CFormView and the method detailed in the MSDN "vswap" example to allow
multiple forms to be viewed ( switched to ) within a single application
( i.e. a single app running and a single window).

A very useful method indeed - very rapid to develop, forms designed at
design time, all forms encapsulated within one window, SDI, only one task on
taskbar etc...

Now, i know that c# / .NET forms do not have a View Class ( hence the
multiple
views on an SDI approach is invalid ) but what is the equivalent
method to achieve a single app, obviously encapsulated within a
single window, with multiple forms (one displayed at a time) effectively
embedded
within a single window ?

I have tried the MDI approach, but i need an SDI.
Modal Forms are not what i am after ( as they generate their own window)
I could do everything at run time ( destroy / create the controls on the
single form) , but
I really want to design the forms at DesignTime using the FormsDesigner

Any ideas on the best approach / method ?

TIA

Jon