You can specify a document's format using server or client methods with the DocumentFormat parameter. See the Import and Export topic for details on how to open and save documents programmatically.
The ASPxRichEdit control supports the following file extensions:
Office Open XML format (aka MS Office 2007 or DOCX)
Microsoft Word 97-2003 format (DOC)
Rich Text Format (RTF)
Plain Text (TXT)
HyperText markup language (HTML)
Web page archive format (MHTML)
OpenDocument format (ODT, implemented by the OpenOffice.org office suite)
WordML format (XML)
Electronic Publication (EPUB)
Portable document format (PDF - programmatic export only)
RichEdit exports documents to PDF using the DevExpress PDF exporting server engine. The server engine's document layout differs from the RichEdit's client document layout, so, the layout in the resulting PDF file may not be the same as in the RichEdit.
You also can open DOT (DOTX) files if you open the file as regular DOC (DOCX) documents as shown in the code snippet below. However, we recommend that you convert template documents to the DOC or DOCX format.