private void listBoxPort_SelectedIndexChanged(object sender, EventArgs e)
{
if (this.listBoxConnName.Items.Count > this.listBoxPort.SelectedIndex)
this.listBoxConnName.SelectedIndex = this.listBoxPort.SelectedIndex;
if (this.listBoxIPAddress.Items.Count > this.listBoxPort.SelectedIndex)
this.listBoxIPAddress.SelectedIndex = this.listBoxPort.SelectedIndex;
if (this.listBoxLocalAddr.Items.Count > this.listBoxPort.SelectedIndex)
this.listBoxLocalAddr.SelectedIndex = this.listBoxPort.SelectedIndex;
}