C# operating system installed directory

问题

How do I find the drive, using C#, in which I installed the operating system (say, Windows 7)? Then I have to get the Program Files directory.

回答1:

Use Environment.GetFolderPath(Environment.SpecialFolder.System);, and for the program files folder use Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles);.

回答2:

Have a look at this link. Environment.GetEnvironmentVariable hopefully, would do the job for you.

回答3:

string systemDrive = Path.GetRoot(Environment.GetFolderPath(Environment.SpecialFolder.System));
string progamFilesPath = Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles);

来源：https://stackoverflow.com/questions/6136763/c-sharp-operating-system-installed-directory