Razor Page Navigation

Hi,

I am new to Razor pages - have successfully complete the 2.0 Razor - EF tutorial and the 2.0 MVC - EF tutorial.  I am trying to make pages from "real" data now using Visual Studio 2017 and SQL Server 2016.  I have successfully scaffolded the VaporProductLines table (CompanyNumber, ProductLineCode, ProductLineDescription, ActiveFlag) to the Model and to Razor Pages.  I have successfully linked the Index page to the Menu - The Create link works. I am stuck at trying to navigate to the Edit, Delete and Details pages.  The table has a composite key (CompanyNumber, ProductLineCode).  I have put the following in the @HtmlActionLink (s).

@Html.ActionLink("Edit", "Edit", new { CompanyNumber= item.CompanyNumber, ProductLineCode = item.ProductLineCode }) |
@Html.ActionLink("Details", "Details", new { CompanyNumber = item.CompanyNumber, ProductLineCode = item.ProductLineCode }) |
@Html.ActionLink("Delete", "Delete", new { CompanyNumber = item.CompanyNumber, ProductLineCode = item.ProductLineCode })

The links do nothing - just return to the index page - any insight would be appreciated.  I used the fluent API in the DBContext to connect the primary key.  

Thanks for your help:

Michael