private async void ExecuteSignIn()
{
SignInResult result;
var asyncServiceClient = _client as IAsyncServiceClient;
if (asyncServiceClient != null)
{
Busy = true;
result = await asyncServiceClient.SignInAsync(Name);
Busy = false;
}
else
{
result = _client.SignIn(Name);
}
ChatViewModel chatViewModel = result.Success
? new ChatViewModel(_client)
: null;
OnSignIn(new SignInEventArgs(result, chatViewModel));
}