private void button1_Click(object sender, EventArgs e)
        {
            string login    = this.LoginTextBox.Text;
            string password = this.PasswordTextBox.Text;

            this.changeEnabledAllItems(false);
            if (!serwer.getConnecting())
            {
                serwer.connection(login, password, this.AddressTextBox.Text, this.PortTextBox.Text);
            }
            else
            {
                serwer.loginInUser(login, password);
            }
        }