Microsoft Word Open XML Document (.docx) is a well-known format for Microsoft Word documents. Introduced from 2007 with the release of Microsoft Office 2007, the structure of this new Document format was changed from plain binary to a combination of XML and binary files.
Learn more about this file format here
GroupDocs.Viewer (in GroupDocs.Viewer.dll) Version: 20.6
public static readonly FileType DOCX
Public Shared ReadOnly DOCX As FileType
static initonly FileType^ DOCX
static val DOCX: FileType