SuperPutty.dlgEditSession.radioButtonTelnet_CheckedChanged C# (CSharp) 메소드

        private void radioButtonTelnet_CheckedChanged(object sender, EventArgs e)
        {
            if (this.radioButtonTelnet.Checked && this.isInitialized)
            {
                if (!string.IsNullOrEmpty(OldHostname))
                {
                    this.textBoxHostname.Text = OldHostname;
                    OldHostname = null;
                }
                this.textBoxPort.Text = "23";
            }
        }