c＃Directory.GetFiles（）-NTFS上的多个文件

Question

Using System.IO.Directory.GetFiles() like this

string[] fileFullPaths1 = Directory.GetFiles(@"C:\Windows\System32", "mycompanyname.scr");
string[] fileFullPaths2 = Directory.GetFiles(@"C:\Windows\SysWOW64", "mycompanyname.scr");

I find the following two files:

• C:\\Windows\\System32\\mycompanyname.scr
• C:\\Windows\\SysWOW64\\mycompanyname.scr

Windows explorer cannot see the one in C:\\Windows\\System32, nor can a command line dir. Furthermore, my own code that searches the MFT shows that there is only one instance of mycompanyname.scr in the MFT and its parent directory record number points to C:\\Windows\\SysWOW64, so I don't think that hard links are confusing the issue. I have also checked that neither of the two directories are junction points.

Could someone please explain why this is?

Answer 1

WOW64 means Windows-on-Windows 64-bit .

SysWOW64 is used to put 32-bit program.
System32 is used to put 64-bit program.

For 32-bit programs, C:\\Windows\\System32 will always be redirected to C:\\Windows\\SysWOW64 .
For 64-bit programs, C:\\Windows\\System32 will be redirected to C:\\Windows\\SysWOW64 if file doesn't exist

You can complie your program to x86 and try again.