After I finished the step shown at Figure 11.6, I ran the application but a prompt shown that "An exception of type 'System.InvalidOperationException' occurred in EntityFramework.dll but was not handled in user code

Additional information: The model backing the 'RentMyWroxContext' context has changed since the database was created. Consider using Code First Migrations to update the database (http://go.microsoft.com/fwlink/?LinkId=238269)."

Anyone knows how to deal with it? Please help

The book suggests the table should be created automatically by running the application. That did not work for me. I had to execute a migration in order for the table to be created.

Go to tools --> NuGet Package Manager --> Package Manager Console. This will open a new pane (se figure 9-45 pg 305)

Type in the following commands:

Add-Migration "Adding Notifications"
Update-Database

This should create the table. You will need to put data into the table.

I hope this helps,
Linda