DataBinding to ICustomTypeDescriptor properties

[Poulsen@discussions.microsoft.com Bo Poulsen]

I see that Blend 3 is able to present data from "dynamic" properties given by
an ICustomTypeDescriptor implementation, at least when presenting a preview
of the designed page I'm editing.

The ICustomTypeDescriptor interface allows for an instantiated type to
export a property list, which at least WPF can use for data binding support
at run-time.
See
http://msdn.microsoft.com/en-us/library/system.componentmodel.icustomtypedescriptor.aspx for more information.

However when using the data binding dialog in Blend, I'm unable to choose
from these generated properties. I take it this is a bug?

Thanks,
Bo