Gets or sets the path to the document, which will be displayed in the DocumentServer.Web.DocumentViewer. The document will be processed and displayed the next time the DocumentServer.Web.DocumentViewer is initialized. Please note that the extension of the specified filename must match the file's type, since the viewer determines the file type based on its extension and passes this information on to the DocumentServer.DocumentController which then in turn will try to load the document. Obviously, this process will fail, if the file extension suggests the wrong file type.
