原文:

        /// <summary>

        /// WPF中查找元素的父元素        /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="i_dp"></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;        }

 

        /// <summary>

        ///WPF查找元素的子元素        /// </summary>        /// <typeparam name="childItem"></typeparam>        /// <param name="obj"></param>        /// <returns></returns>        private childItem FindVisualChild<childItem>(DependencyObject obj)    where childItem : DependencyObject        {             for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)            {                 DependencyObject child = VisualTreeHelper.GetChild(obj, i);                if (child != null && child is childItem)                    return (childItem)child;                else                {                     childItem childOfChild = FindVisualChild<childItem>(child);                    if (childOfChild != null)                        return childOfChild;                }            }            return null;        }

 

       //测试listView获取焦点后，将符合条件的的项选中

       private void listView_GotFocus(object sender, RoutedEventArgs e)

        {             DependencyObject dobj = e.OriginalSource as DependencyObject;            if (null != dobj)            {                 System.Windows.Controls.ListViewItem gvc = FindParent<System.Windows.Controls.ListViewItem>(dobj);                if (gvc != null)                {                     System.Windows.Controls.ListView listView = FindParent<System.Windows.Controls.ListView>(gvc);                    if (listView != null)                    {                         int index = 0;                        foreach (var lv in listView.ItemsSource)                        {                             if ((FTPFile)gvc.DataContext == lv)                            {                                 listView.SelectedIndex = index;                                break;                            }                            index++;                        }                    }

                }

            }        }