/// <summary>
/// Client Disconnect Listener
/// </summary>
/// <param name="d">disconnected Json object</param>
private void OnClientDisconnect(Disconnected d)
{
Invoke(new MethodInvoker(
() =>
{
LabelError.Text = "User " + d.GetUserID() + " disconnected";
LabelError.Visible = true;
}));
}
