授予对新文件夹的访问权时发生System.UnauthorizedAccessException

Question

我正在使用以下代码来授予对IIS文件夹的访问权限：

string path=@"C:\inetpub\logs\LogFiles\W3SVC6\";
AddDirectorySecurity(path, "everyone", FileSystemRights.ReadData, AccessControlType.Allow);

public static void AddDirectorySecurity(string FileName, string Account, FileSystemRights Rights, AccessControlType ControlType)
{
    DirectoryInfo dInfo = new DirectoryInfo(FileName);
    DirectorySecurity dSecurity = dInfo.GetAccessControl();

    dSecurity.AddAccessRule(new FileSystemAccessRule(Account, Rights,
    ControlType));      
    dInfo.SetAccessControl(dSecurity);

}