您可以在此处找到一些指导：

如何从VB.Net应用程序预览MS Office文档？ [ ^ ]

和这里：

在vb.net中预览Word DOC [ ^ ]

Some guidance you'll find here:
How can you preview a MS Office document from a VB.Net application?[^]
and here:
Preview Word DOC in vb.net[^]