Does anybody know how the ASP.NET designer serializes/deserializes
properties of abstract type? I have a property of type Editor.
TextEditor and ImageEditor are derived from Editor which is abstract.
On my control, I have a property that is of type Editor.
public Editor Editor
{}

When it serializes it to the design time HTML it does so like this:

<DateColumn Hidden="False" Enabled="False">
<Editor DatasourceId="dadasdfsf"></Editor>
</DateColumn>

However, it doesn't save any type information. When I try open the form
again in the design view it tries to create an Editor object and
obviously fails since Editor is abstract.

How do I hook the CreateInstance for this? I've tried TypeConverters
but it wont call my CreateInstance method.

Any ideas would be appreciated. I'm losing it on this one.

Thanks,
Joel