gistfile1.cs

interactionStream = new InteractionStream(Sensor, new InteractionClient()); 

//..SNIP...

void ProcessDepthFrame() {
    using (var dif = this.Sensor.DepthStream.OpenNextFrame(0)) {
        if (dif != null) {
            DepthImagePixel[] data = new DepthImagePixel[dif.PixelDataLength];
            dif.CopyDepthImagePixelDataTo(data);
            
            //Feed depth data to interactionStream
            interactionStream.ProcessDepth(data, dif.Timestamp);
        }
    }
}

void ProcessSkeletonFrame() {
    using (var skeletonFrame = this.Sensor.SkeletonStream.OpenNextFrame(0)) {
        if (skeletonFrame != null) {
            Skeleton[] skeletons = new Skeleton[skeletonFrame.SkeletonArrayLength];
            skeletonFrame.CopySkeletonDataTo(skeletons);
            
            //Feed skeleton data to interactionStream
            var accelerometerReading = this.Sensor.AccelerometerGetCurrentReading();
            interactionStream.ProcessSkeleton(skeletons, accelerometerReading, skeletonFrame.Timestamp);

            Skeletons.Clear();
            foreach (Skeleton skel in skeletons) {
                if (skel.TrackingState == SkeletonTrackingState.Tracked) {
                    Skeletons.Add(skel);             
                }
            }
        }
    }
}

void ProcessInteractionFrame() {
    using(var interactionFrame = interactionStream.OpenNextFrame(0)) {
        if (interactionFrame != null) {                   
            UserInfo[] userInfo = new UserInfo[InteractionFrame.UserInfoArrayLength];
            interactionFrame.CopyInteractionDataTo(userInfo);
                      
            //Query the UserInfo for every skeleton and save it in a dictionary
            UserInfos.Clear();
            foreach (var skel in Skeletons) {
                var ui = (from UserInfo u in userInfo where u.SkeletonTrackingId == skel.TrackingId select u).FirstOrDefault();
                if (ui != null)
                    UserInfos.Add(skel.TrackingId, ui);
            }
        }
    }
}


public void Update() {
    if (this.Sensor != null) {
        ProcessColorFrame();
        ProcessSkeletonFrame();
        ProcessDepthFrame();
        ProcessInteractionFrame();
    }
}