问题
I have run into this several times now:
An error was raised by libgit2. Category = Os (Error).
Which sometimes causes this or similar error while i am writing code:
Failed to open '.../App_Data/....mdf':
The process cannot access the file because it is being used by another process.
When this happens i can't code without restarting my Visaul Studio 2012.
I think it's being caused by Source Control - Git as i don't remember having this problem before i installed the Git extension for Visual Studio and Team Foundation.
Has anyone else run into this and how did they solve it?
回答1:
I just ran into this today with a new Visual Studio project. The project was using the autogenerated .gitignore which had the following entries which I thought should have covered the .mdf file just fine:
# SQL Server files
App_Data/*.mdf
App_Data/*.ldf
However I still received:
An error was raised by libgit2. Category = Os (Error).
Failed to open '.../App_Data/....mdf':
The process cannot access the file because it is being used by another process.
So I edited the .gitignore, preceding each entry with an asterisk-slash, like so:
# SQL Server files
*/App_Data/*.mdf
*/App_Data/*.ldf
And I was able to continue business as usual.
回答2:
I would want to add it is maybe just as simple as => Close your database connexion :)
回答3:
I had the same error. IIS express was running in the system tray. When I killed IIS Express everything committed as expected.
来源：https://stackoverflow.com/questions/16163104/an-error-was-raised-by-libgit2-category-os-error