wpf查找父元素和子元素代码

1.根据类型查找子元素

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/// <summary>
        /// 根据类型查找子元素
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <param name="typename"></param>
        /// <returns></returns>
        public List<T> GetChildObjects<T>(DependencyObject obj, Type typename) 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).GetType() == typename))
                {
                    childList.Add((T)child);
                }
                childList.AddRange(GetChildObjects<T>(child, typename));
            }
            return childList;
        }

1.1 调用方法：

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List<StackPanel> initToolBarWeChatUserSp = GetChildObjects<StackPanel>(name, typeof(StackPanel));

2.查找父元素

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/// <summary>
        /// 查找父元素
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <param name="name"></param>
        /// <returns></returns>
        public static T FindParent<T>(DependencyObject i_dp) where T : DependencyObject
        {
            DependencyObject dobj = (DependencyObject)VisualTreeHelper.GetParent(i_dp);
            if (dobj != null)
            {
                if (dobj is T)
                {
                    return (T)dobj;
                }
                else
                {
                    dobj = FindParent<T>(dobj);
                    if (dobj != null && dobj is T)
                    {
                        return (T)dobj;
                    }
                }
            }
            return null;
        }

2.1 调用方法：

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Border tbBorder = FindParent<Border>(name);

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