private void tcDeviceTab_Selected(object sender, TabControlEventArgs e)
{
btnSendShared.Visible = false;
btnSendShared.Enabled = false;
switch (tcDeviceTabs.SelectedIndex)
{
case 2:
PairBondUserInputControl();
break;
case 3:
btnSendShared.Visible = true;
btnSendShared.Enabled = true;
break;
}
}