In the previous recipe, we extended a content type using an XML schema. This can get pretty difficult as Visual Studio does not provide ways to debug the XML schemas. Instead of using the xml schema method, you can always use object model APIs to create the content type. In this recipe we will do just that.
For this recipe, we will create a new content type called Project Proposal that has four custom columns Amount, Department, Project Start Date, and Project End Date. The
Department field is a choice type where you can select the department to which the project belongs. The
Amount field is of currency type and the
Project Start Date and the
Project End Date are of
DateTime type. The content type will be inherited from the document content type.