private void deviceTwinCallback(int update_state, IntPtr payload, int size, UIntPtr userContextCallback)
{
string strPayload = Marshal.PtrToStringAnsi(payload, size);
DeviceTwinCallbackArgs deviceTwinCallbackArgs = new DeviceTwinCallbackArgs(update_state, strPayload, userContextCallback);
OnDeviceTwinCallback(deviceTwinCallbackArgs);
}
protected virtual void OnDeviceTwinCallback(DeviceTwinCallbackArgs e)
{
EventHandler <DeviceTwinCallbackArgs> handler = DeviceTwinCallback;
if (handler != null)
{
handler(this, e);
}
}