XML Paper Specification File (.xps) represents page layout files that are based on XML Paper Specifications created by Microsoft. This format was developed by Microsoft as a replacement of EMF file format and is similar to PDF file format, but uses XML in layout, appearance, and printing information of a document.
Learn more about this file format here
GroupDocs.Viewer (in GroupDocs.Viewer.dll) Version: 22.5
public static readonly FileType XPS
Public Shared ReadOnly XPS As FileType
static initonly FileType^ XPS