SilverLight 中ListBox获取选中项

 private void TongZhiGG_SelectionChanged(object sender, SelectionChangedEventArgs e)        {            ListBoxItem _selectedItem = (ListBoxItem)(TongZhiGG.ItemContainerGenerator.ContainerFromItem(this.TongZhiGG.SelectedItem));                       TextBlock myTxt = FindFirstVisualChild<TextBlock>(_selectedItem, "MyOID");            string Select_value = myTxt.Text.ToString();            //MessageBox.Show(Select_value.ToString());            Aggregator.SendMessage<MessageToKranthi, string>(                 new MessageToKranthi { Payload = "页面跳转"+Select_value}             );        }        #endregion        public T FindFirstVisualChild<T>(DependencyObject obj, string childName) where T : DependencyObject        {            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)            {                DependencyObject child = VisualTreeHelper.GetChild(obj, i);                if (child != null && child is T && child.GetValue(NameProperty).ToString() == childName)                {                    return (T)child;                    }                else                {                    T childOfChild = FindFirstVisualChild<T>(child, childName);                    if (childOfChild != null)                    {                        return childOfChild;                    }                }            }            return null;        }

或者 取用WCF

 private void TongZhiGG_SelectionChanged(object sender, SelectionChangedEventArgs e)        {Info i = (Info)this.TongZhiGG.SelectedItem;            string a = i.A_InfoOID.ToString(); }

来源：https://www.cnblogs.com/zgz_dpl/archive/2011/02/16/1956195.html