public static class VisualTreeExtensions    {        /// <summary>        /// 获取父节点控件        /// </summary>        /// <typeparam name="T">子控件UI</typeparam>        /// <param name="obj">子控件</param>        /// <param name="name">父容器名称</param>        /// <returns>父容器对象</returns>        public static T GetParent<T>(this DependencyObject obj, string name = null) where T : FrameworkElement        {            DependencyObject parent = VisualTreeHelper.GetParent(obj);            while (parent != null)            {                if (parent is T && (((T)parent).Name == name || string.IsNullOrEmpty(name)))                {                    return (T)parent;                }                parent = VisualTreeHelper.GetParent(parent);            }            return null;        }        /// <summary>        /// 获取子控件        /// </summary>        /// <typeparam name="T">UI类型</typeparam>        /// <param name="obj">父容器对象</param>        /// <param name="name">子控件名称</param>        /// <returns>子控件</returns>        public static T GetChild<T>(this DependencyObject obj, string name = null) 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 = GetChild<T>(child, name);                    if (grandChild != null)                        return grandChild;                }            }            return null;        }        /// <summary>        /// 获取子控件集合        /// </summary>        /// <typeparam name="T">UI类型</typeparam>        /// <param name="obj">父容器对象</param>        /// <param name="name">子控件名称</param>        /// <returns>子控件集合</returns>        public static List<T> GetChildren<T>(this DependencyObject obj, string name = null) 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 && (((T)child).Name == name || string.IsNullOrEmpty(name)))                {                    childList.Add((T)child);                }                childList.AddRange(GetChildren<T>(child, ""));            }            return childList;        }        /// <summary>        /// 查找某控件下的所有給定類型的子控件集合        /// </summary>        /// <typeparam name="T">要查找的子控件類型</typeparam>        /// <param name="depObj">父控件</param>        /// <returns>子控件集合</returns>        public static T FindVisualChild<T>(this DependencyObject depObj, string childName = null) where T : FrameworkElement        {            if (depObj != null)            {                for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)                {                    DependencyObject child = VisualTreeHelper.GetChild(depObj, i);                    if (child != null && child is T &&                        (((T)child).Name == childName || string.IsNullOrEmpty(childName)))                    {                        return (T)child;                    }                    else                    {                        T childOfChild = FindVisualChild<T>(child, childName);                        if (childOfChild != null && childOfChild is T)                        {                            return childOfChild;                        }                    }                }                return null;            }            return null;        }        /// <summary>        /// 查找某控件下的所有給定類型的子控件集合        /// </summary>        /// <typeparam name="T">要查找的子控件類型</typeparam>        /// <param name="depObj">父控件</param>        /// <returns>子控件集合</returns>        public static List<T> FindVisualChildren<T>(this DependencyObject depObj, string childName = null) where T : FrameworkElement        {            List<T> list = new List<T>();            if (depObj != null)            {                for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)                {                    DependencyObject child = VisualTreeHelper.GetChild(depObj, i);                    if (child != null && child is T                        && (((T)child).Name == childName || string.IsNullOrEmpty(childName)))                    {                        list.Add((T)child);                    }                    List<T> childItems = FindVisualChildren<T>(child, childName);                    if (childItems != null && childItems.Count > 0)                    {                        foreach (var item in childItems)                        {                            list.Add(item);                        }                    }                }            }            return list;        }    }