New Post: select shapes in shapefile

Hi all, I'm new to mapwingis.
I need to select some shapes from a shapefile and I'm trying to follow an example found on the documentation page.
I used MapWinGis.Shapefile.SelectByShapefile method to build a vector of integer shape-ids, but when try to use the set_ShapeSelected method I get the error: "... set_ShapeSelecetd is not a member of MapWinGis.Shapefile"
I'm using vb.net (vs2013) and mapwingis 4.9.
Is there another way to do this?
Thanks in advance for any suggestion...
Marco