The answer to my problem turned out to be
Step 4: Converting the Project Files from http://webproject.scottgu.com/CSharp/migration2/migration2.aspx.
The missing step was that I had not gone to the root of the project, right -clicked and select "Convert to Web Application". Once this was done, xxx.aspx.designer.cs files were CREATED FOR EACH xxx.aspx.
(Also I can turn on XML documentation on the web site.)
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