Dynamically loading controls -> loosing type

[Peter Zuber]

Hi NG

We want to load controls dynamically and create them on a WinForm. Doing so,
we seem to loose type information. The scenario is as follows: The class
MANCombobBox inherits from ComboBox and implements the interface
IReportDataSour ce.

This works:
Control c = new MANComboBox(); //MANComboBox inherits from ComboBox and
implements the interface IReportDataSour ce

MessageBox.Show ( (c is IReportDataSour ce).ToString() ); //This
returns/displays true

Here we have the problem:
Assembly asm = Assembly.LoadFi le("LookupContr ols.dll"); //loads the dll
which contains the MANComboBox control

Control control = (Control) asm.CreateInsta nce(fullControl Name); //Pointing
with the mouse onto control, the IDE tells me, that control contains
something of type MANComboBox

MessageBox.Show ( (control is
MAN.Framework.W in.MANReportLoo kupControls.MAN ComboBox).ToStr ing() );
//returns false

Intellisense even shows me the methods of the implemented interface
IReportDataSour ce but during runtime an invalid cast exception is thrown.

Any hints?

Thanks for all the help we get

Cheers

Peter