private void ReloadMessageHistoryListForSelectedContact()
{
Dispatcher.Invoke(DispatcherPriority.Normal, (ThreadStart) delegate()
{
LbChatMessages.Items.Clear();
List <Message> messageHistory =
_clientService.ContactsMessageHistory.FirstOrDefault(u => u.Key.Id == _selectedChatContact.Id)
.Value;
foreach (var message in messageHistory)
{
string messageString =
$"{message.SendTime.ToShortTimeString()} {message.Sender.UserName}: {message.MessageText}";
LbChatMessages.Items.Add(messageString);
}
LbChatMessages.Items.MoveCurrentToLast();
LbChatMessages.ScrollIntoView(LbChatMessages.Items.CurrentItem);
});
}
private void _clientService_MessageReceived(Message message)
{
if (ChatContactsList.FirstOrDefault(u => u.Id == message.Sender.Id) == null)
{
Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart)ReloadContactList);
}
if (_selectedChatContact != null && (message.Sender.UserName == _selectedChatContact.UserName))
{
Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart) delegate()
{
string messageString =
$"{message.SendTime.ToShortTimeString()} {message.Sender.UserName}: {message.MessageText}";
LbChatMessages.Items.Add(messageString);
LbChatMessages.Items.MoveCurrentToLast();
LbChatMessages.ScrollIntoView(LbChatMessages.Items.CurrentItem);
});
}
}