Question

Using C#, how do I create a folder only accessible by the current windows user that is executing the program?

That is, if I log in Windows as “MyDomain\John” and run the program to create a folder “D:\JohnOnly”. After I log out and log back in as “MyDomain\Sam”. The “D:\JohnOnly” can not be opened.

Thanks,

Answer 1

This is what I wrote after more research:

public void CreatePrivateDirectory(string path)
  {
     DirectorySecurity directorySecurity = new DirectorySecurity();
     SecurityIdentifier userSid = WindowsIdentity.GetCurrent().User;
     directorySecurity.AddAccessRule(new FileSystemAccessRule(userSid, FileSystemRights.FullControl,
                                                              InheritanceFlags.ContainerInherit |
                                                              InheritanceFlags.ObjectInherit,
                                                              PropagationFlags.None, AccessControlType.Allow));
     if(!Directory.Exists(path))
     {
        Directory.CreateDirectory(path, directorySecurity);
     }
  }

It worked. I will mark it as answer if no serious bug found. Thanks.