/// 获得指定元素的父元素

        /// </summary>

        /// <typeparam name="T">指定页面元素</typeparam>

        /// <param name="obj"></param>

        /// <returns></returns>

        public T GetParentObject<T>(DependencyObject obj) where T : FrameworkElement

        {

            DependencyObject parent = VisualTreeHelper.GetParent(obj);  

            while (parent != null)

            {

                if (parent is T)

                {

                    return (T)parent;

                }  

                parent = VisualTreeHelper.GetParent(parent);

            }  

            return null;

        }  

        /// <summary>

        /// 获得指定元素的所有子元素

        /// </summary>

        /// <typeparam name="T"></typeparam>

        /// <param name="obj"></param>

        /// <returns></returns>

        public List<T> GetChildObjects<T>(DependencyObject obj) where T : FrameworkElement

        {

            DependencyObject child = null;

            List<T> childList = new List<T>();  

            for (int i = 0; i <= VisualTreeHelper.GetChildrenCount(obj) - 1; i++)

            {

                child = VisualTreeHelper.GetChild(obj, i);  

                if (child is T)

                {

                    childList.Add((T)child);

                }

                childList.AddRange(GetChildObjects<T>(child));

            }

            return childList;

        }

 /// 查找子元素

        /// </summary>

        /// <typeparam name="T"></typeparam>

        /// <param name="obj"></param>

        /// <param name="name"></param>

        /// <returns></returns>

        public T GetChildObject<T>(DependencyObject obj, string name) where T : FrameworkElement

        {

            DependencyObject child = null;

            T grandChild = null;  

            for (int i = 0; i <= VisualTreeHelper.GetChildrenCount(obj) - 1; i++)

            {

                child = VisualTreeHelper.GetChild(obj, i);  

                if (child is T && (((T)child).Name == name | string.IsNullOrEmpty(name)))

                {

                    return (T)child;

                }

                else

                {

                    grandChild = GetChildObject<T>(child, name);

                    if (grandChild != null)

                        return grandChild;

                }

            }

            return null;

        }