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