public ADGroup RetrieveADGroupWithSecurityIdentifier(SecurityIdentifier SecurityIdentifier, string[] AdditionalProperties = null)
{
if (SecurityIdentifier == null)
throw new ArgumentNullException("SecurityIdentifier");
if (!SecurityIdentifier.IsEqualDomainSid(this.Domain.SecurityIdentifier))
throw new ArgumentException(string.Format("The specified Security Identifier [{0}] does not belong to this domain [{1}]", SecurityIdentifier.ToString(), this.Domain.Name), "SecurityIdentifier");
var sidBinaryString = SecurityIdentifier.ToBinaryString();
string ldapFilter = string.Format(ADGroup.LdapSecurityIdentifierFilterTemplate, sidBinaryString);
string[] loadProperites = (AdditionalProperties != null && AdditionalProperties.Length > 0)
? ADGroup.LoadProperties.Concat(AdditionalProperties).ToArray()
: ADGroup.LoadProperties;
var result = this.SearchEntireDomain(ldapFilter, loadProperites, ActiveDirectory.SingleSearchResult).FirstOrDefault();
if (result == null)
return null;
else
return result.AsADGroup(AdditionalProperties);
}