Therefore API > API Reference > Classes > TheDocument > Methods
GetThumbnail
Retrieves the thumbnail of the document.
Name
Description
GetThumbnail(TheServer)
GetThumbnail(TheServer, int)
Retrieves the thumbnail of the document with a specified size.
GetThumbnail(TheServer, int, int)
Retrieves the thumbnail of a certain file within the document with a specified size.
Please check the help pages of the various overloads for the exact syntax in Visual Basic and C#.