This example shows how to advertise a custom payload from a Windows 10 device in the foreground. The payload uses a made up company (identified as 0xFFFE) and advertises the string Hello World
in the advertisement.
BluetoothLEAdvertisementPublisher publisher = new BluetoothLEAdvertisementPublisher();
// Add custom data to the advertisement
var manufacturerData = new BluetoothLEManufacturerData();
manufacturerData.CompanyId = 0xFFFE;
var writer = new DataWriter();
writer.WriteString("Hello World");
// Make sure that the buffer length can fit within an advertisement payload (~20 bytes).
// Otherwise you will get an exception.
manufacturerData.Data = writer.DetachBuffer();
// Add the manufacturer data to the advertisement publisher:
publisher.Advertisement.ManufacturerData.Add(manufacturerData);
publisher.Start();
Note: This is only for advertising in the foreground (while the app is open).