A Metafile is a type of file that can store variety of data. You can add .emf and .wmf images to your word documents. Following code shows the use of DrawMetafile method to draw a metafile image in a Word document:
Dim img As Image = Metafile.FromFile(dlg.FileName) C1Word.DrawMetafile(DirectCast(img, Metafile))
Image img = Metafile.FromFile(dlg.FileName); C1Word.DrawMetafile((Metafile)img);