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Now you have a new form named My Purchase Order Form and you have the purchase order element added to the Data Source pane in the Designer. Using the designer, expand the Data Source pane and click the plus button to auto-generate the form controls (note that the API will be expanded to support auto generating controls).

I added a DocumentType from a Schema to my FormType

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. Why do I see two DocumentType's?

Every FormType always has 1 default DocumentType that cannot be removed. This is the DocumentType managed by  and updated when controls from the palette are added or removed from the form. For this DocumentType the Delete() method will fail (you can check whether a DocumentType can be deleted or not using the entry's ReadOnly property).

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