public IEnumerable <ADRecipient> ResolveLegacyDNs(IEnumerable <string> legacyDNs)
{
if (legacyDNs != null && legacyDNs.Any <string>())
{
IRecipientSession recipientSession = (IRecipientSession)this.CreateAdSession();
return(from recipient in recipientSession.FindADRecipientsByLegacyExchangeDNs(legacyDNs.ToArray <string>())
where recipient.Data != null
select recipient.Data);
}
return(null);
}
private static Dictionary <string, ADRecipient> FindByLegacyExchangeDNs(string[] legacyExchangeDNs, UserContext userContext)
{
Dictionary <string, ADRecipient> dictionary = new Dictionary <string, ADRecipient>(StringComparer.OrdinalIgnoreCase);
if (legacyExchangeDNs.Length > 0)
{
IRecipientSession recipientSession = Utilities.CreateADRecipientSession(ConsistencyMode.IgnoreInvalid, userContext);
Result <ADRecipient>[] array = recipientSession.FindADRecipientsByLegacyExchangeDNs(legacyExchangeDNs);
for (int i = 0; i < array.Length; i++)
{
if (array[i].Data != null)
{
dictionary[legacyExchangeDNs[i]] = array[i].Data;
}
}
}
return(dictionary);
}