public static FileSystemPrincipal GetOwner(FileSystemInfo item, LookupCache cache)
{
SecurityIdentifier ownerSID = null;
IdentityReference ownerNTAccount = null;
CachedUserPrincipal ownerPrincipal = null;
try
{
FileSystemSecurity fac = null;
if (item is FileInfo)
{
fac = File.GetAccessControl(item.FullName);
}
if (item is DirectoryInfo)
{
fac = Directory.GetAccessControl(item.FullName);
}
if (fac != null)
{
ownerSID = fac.GetOwner(typeof(SecurityIdentifier)) as SecurityIdentifier;
if (ownerSID != null)
{
ownerNTAccount = cache.GetName <NTAccount>(FileSystemObjectTypes.NTAccount, ownerSID);
ownerPrincipal = cache.GetName <CachedUserPrincipal>(FileSystemObjectTypes.Principal, ownerSID);
}
}
return(new FileSystemPrincipal(ownerSID, ownerNTAccount, ownerPrincipal));
}
catch (Exception)
{
}
return(null);
}