public async void StartLoad(bool isHavePastMessage)
{
_chatView = new ChatView();
_chatViewModel = new ChatViewModel(_chatView, Name);
_currentViewModel = _chatViewModel;
await Task.Run(() => _chatViewModel.StartLoad(isHavePastMessage));
_serverWorker.RewriteDelegate(_chatViewModel);
Content = _chatView;
Content.DataContext = _chatViewModel;
_chatView.ScrollStart();
}
