//if devices change disconnect
private void DevicesComboBox_SelectedIndexChanged(object sender, EventArgs e)
{
currentSelectedService = null;
currentSelectedCharacteristic = null;
ConnectBtn.Enabled = true;
CharacteristicsTxtBox.Clear();
ServiceTxtBox.Clear();
}
//trigger StartBleDeviceWatcher() to start bluetoothLe Operation
private void ScanBtn_Click(object sender, EventArgs e)
{
//empty bluetooth inputs
DevicesComboBox.Items.Clear();
CharacteristicsTxtBox.Clear();
ServiceTxtBox.Clear();
//empty devices list
_knownDevices.Clear();
UnknownDevices.Clear();
//notify user
Respond("Scanning nearby devices...");
//disable scan button
ScanBtn.Enabled = false;
//finally, start scanning
StartBleDeviceWatcher();
}