The C1PdfViewer control consists of two parts: a toolbar and a content area. The image below identifies the toolbar and content area:

Any HTML content or PDF that you load into the C1PdfViewer control will be viewed in the content area. The toolbar allows users to manipulate the content at run time, for example to print or zoom the content. For more information about the content area and toolbar, see the PdfViewer Content Area and PdfViewer Toolbar topics.

PdfViewer for WPF and Silverlight also includes the C1PdfViewerToolbar control which consists of just the toolbar element.