private async void Enter()
{
Busy = true;
_client = _serviceClientFactory.GetServiceClient();
var configuration = new ConnectionConfiguration
{
ServerName = ServerName,
UseSsl = UseSsl
};
_client.Connect(configuration);
SignInResult result = await _client.SignInAsync(Name);
Busy = false;
ChatViewModel chatViewModel = result.Success
? new ChatViewModel(_client)
: null;
OnEntered(new SignInEventArgs(result, chatViewModel));
}