为什么无法将MDF文件添加到Visual Studio

Question

I try to add a mdf file to app_data in mvc. Everytime I get Microsoft visual studio alert with this:

"The file can not be opened because it is being used by another process, please close all applications that might access this file and try again."

I disconnected sql and closed it. I then closed all applications and only visual studio was on. I still get the alert. Only when I restart my computer the alert is off.

What am I missing?

Answer 1

MDF files are generally used by a separate SQL Server process. You would normally change and query data by communicating with this server, not by trying to use it's data files directly.

If you can add some more context around your problem -- including what software you are using and what you have tried -- you might get better answers than this.