I am learning and developing web site in VS 2005. I used Login controls. ASPNETDB.MDF is created and I was able to modify db tables and develop my application for weeks.
Yesterday I got problem. VS2005 Server Explorer do not show ASPNETDB.MDF. Double clicking on ASPNETDB.MDF in Solution Explorer gives the message:
"object reference is not set to an instance of object"
Any idea how to fix the problem?