public class AnnotationAddedEventArg : EventArgs

        public float TcBegin

        public float Dur

        public String GestureType

    public class Annotation

        private float _tcBegin;

        private float _dur;

        private string _gestureType;

        //public event EventHandler<AnnotationAddedEventArg> AnnotationAdded;

            this._tcBegin = tcBeginPar;

            this._dur = durPar;

            this._gestureType = gesturePar;

            //AnnotationAdded(this, new AnnotationAddedEventArg(_tcBegin, _dur, _gestureType));

        }

        public float TcBegin

        {

            get { return _tcBegin; }

            set

            {

                if (value == _tcBegin || float.IsNaN(value))

                    return;

                _tcBegin = value;

            }

        }

        public float Dur

        {

            get { return _dur; }

            set

            {

                if (value == _dur || float.IsNaN(value))

                    return;

                _dur = value;

            }

        }

        public String GestureType

        {

            get { return _gestureType; }

            set

            {

                if (value == _gestureType || String.IsNullOrEmpty(value))

                    return;

                _gestureType = value;

            }