How to: Copy Class Diagram Elements to a Microsoft Office Document (Class Designer)
You can copy shapes from a .NET class diagram (.cd file) to other documents. You'll either get a copy of the shape or its underlying code based on the kind of document where you paste it. To copy shapes from UML class diagrams in a modeling project, see Export Images of Diagrams.
To copy a single element
Right-click the shape and choose Copy Image.
To copy several elements
On the diagram surface, select the shapes you want to copy.
Right-click your selection and choose Copy Image.
To copy all the elements in a class diagram
Right-click the diagram surface and choose Select All. (Keyboard: Ctrl + A)
On the Edit menu, select Copy Image.
All the diagram’s shapes are placed on the Clipboard.
You can also choose Copy instead of Copy Image. Copy copies the image as a regular bitmap. Copy Image copies the image as a vector-based image, which is better for most Office applications.