如何使用C#检查LocalSystem账号对特定本地目录是否有读写权限？

string directoryPath = "目录路径";
DirectoryInfo directoryInfo = new DirectoryInfo(directoryPath);

DirectorySecurity directorySecurity = directoryInfo.GetAccessControl();

SecurityIdentifier localSystemSid = new SecurityIdentifier(WellKnownSidType.LocalSystemSid, null);

AuthorizationRuleCollection authorizationRules = directorySecurity.GetAccessRules(true, true, typeof(SecurityIdentifier));
bool hasReadWritePermission = false;

foreach (FileSystemAccessRule rule in authorizationRules)
{
    if (rule.IdentityReference.Equals(localSystemSid) && (rule.FileSystemRights.HasFlag(FileSystemRights.Read) || rule.FileSystemRights.HasFlag(FileSystemRights.Write)))
    {
        hasReadWritePermission = true;
        break;
    }
}

if (hasReadWritePermission)
{
    Console.WriteLine("LocalSystem账号具有对该目录的读写权限。");
}
else
{
    Console.WriteLine("LocalSystem账号没有对该目录的读写权限。");
}