public static VisualObject GetChild(VisualObject rootObject, Expression <Func <VisualObject, bool> > filter)
        {
            if (rootObject == null)
            {
                return((VisualObject)null);
            }
            if (filter.Compile()(rootObject))
            {
                return(rootObject);
            }
            IEnumerable <VisualObject> visualChildren = rootObject.GetVisualChildren();

            if (visualChildren == null)
            {
                return((VisualObject)null);
            }
            foreach (VisualObject rootObject1 in visualChildren)
            {
                VisualObject child = VisualObjectHelper.GetChild(rootObject1, filter);
                if (child != null)
                {
                    return(child);
                }
            }
            return((VisualObject)null);
        }
        public static VisualObject GetChild(VisualObject rootObject, Expression <Func <VisualObject, bool> > filter)
        {
            VisualObject result;

            if (rootObject == null)
            {
                result = null;
            }
            else if (filter.Compile()(rootObject))
            {
                result = rootObject;
            }
            else
            {
                IEnumerable <VisualObject> visualChildren = rootObject.GetVisualChildren();
                if (visualChildren == null)
                {
                    result = null;
                }
                else
                {
                    foreach (VisualObject current in visualChildren)
                    {
                        VisualObject child = VisualObjectHelper.GetChild(current, filter);
                        if (child != null)
                        {
                            result = child;
                            return(result);
                        }
                    }
                    result = null;
                }
            }
            return(result);
        }