Database Connection Error “file in use”

Question

I am using Visual Studio 2010 C# Express and SQL Server Management Studio with SQL Server 2012 I am getting an error when I try to connect a database to my Windows forms pro

Answer 1

Your school.mdf is attached in your SQL Server 2012. You need to detach it.

Go to your SQL Server Management Studio, Right-Click on School, Tasks, Detach.

Unless it is detached, it will be in use by the the SQL Server Management Studio.