Actually, the best way (since this is a Doc/View architecture) is to store the data in your document. The view should be responsible for displaying that data to the user however needed.

Now when you need to change the data, change it in the document and then call the document class UpdateAllViews(). This will call the OnUpdate for each view, and the view can then redraw/update itself from the new document data. (Of course, you have to write the code in the OnUpdate handler to do whatever is needed.)

Hope that helps.