private async void ChatOnRosterReceived(object sender, RosterReceivedEventArgs e)
 {
   try
   {
     UberChatClient client = (UberChatClient) sender;
     RiotAccount account = client.Account;
     Contact[] contacts = e.Contacts;
     long[] summonerIds = Enumerable.ToArray<long>(Enumerable.Select<Contact, long>((IEnumerable<Contact>) contacts, (Func<Contact, long>) (c => JsApiService.GetSummonerIdFromJid(c.Jid))));
     string[] summonerNames = await account.InvokeAsync<string[]>("summonerService", "getSummonerNames", new object[1]
     {
       (object) summonerIds
     });
     for (int index = 0; index < contacts.Length; ++index)
     {
       Contact contact = contacts[index];
       string str = summonerNames[index];
       if (!(contact.Name == str))
       {
         contact.Name = str;
         this.OnContactUpdated(client, ContactsNotificationService.JsContact.Create(client, contact));
         client.Contacts.Update(contact.BareJid, contact.Name, contact.Groups);
       }
     }
   }
   catch (Exception ex)
   {
   }
 }
 private async void ChatOnRosterReceived(object sender, RosterReceivedEventArgs args)
 {
     try
     {
         UberChatClient uberChatClient = (UberChatClient)sender;
         RiotAccount account = uberChatClient.Account;
         Contact[] contacts = args.Contacts;
         Contact[] contactArray = contacts;
         long[] array = (
             from c in (IEnumerable<Contact>)contactArray
             select JsApiService.GetSummonerIdFromJid(c.Jid)).ToArray<long>();
         RiotAccount riotAccount = account;
         object[] objArray = new object[] { array };
         string[] strArrays = await riotAccount.InvokeAsync<string[]>("summonerService", "getSummonerNames", objArray);
         for (int i = 0; i < (int)contacts.Length; i++)
         {
             Contact contact = contacts[i];
             string str = strArrays[i];
             if (contact.Name != str)
             {
                 contact.Name = str;
                 this.OnContactUpdated(uberChatClient, ContactsNotificationService.JsContact.Create(uberChatClient, contact));
                 uberChatClient.Contacts.Update(contact.BareJid, contact.Name, contact.Groups);
             }
         }
     }
     catch (Exception exception)
     {
     }
 }