有如下控件

 现要知道CheckBox是否选中，但是它是DataTemplate内部的控件，要如何访问到呢，MSDN上这样做的

所以方法如下

private childItem FindVisualChild
     
      (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
      
       (child);                    if (childOfChild != null)                        return childOfChild;                }            }            return null;        }        private void Button_Click(object sender, RoutedEventArgs e)        {            ListBoxItem lbitem = null;            ContentPresenter myContentPresenter = null;            DataTemplate myDataTemplate = null;            CheckBox ck = null;            TextBlock tb = null;            for (int i = 0; i < lb.Items.Count; i++)            {                lbitem = (ListBoxItem)(lb.ItemContainerGenerator.ContainerFromItem(lb.Items[i]));                myContentPresenter = FindVisualChild
       
        (lbitem);                myDataTemplate = myContentPresenter.ContentTemplate;                ck = (CheckBox)myDataTemplate.FindName("ck", myContentPresenter) as CheckBox;                if (ck.IsChecked == true)                {                    tb = (TextBlock)myDataTemplate.FindName("tb", myContentPresenter) as TextBlock;                    MessageBox.Show(tb.Text);                }            }        }
       
      
     

 功能实现...

今天又遇到一个不一样的，DataGrid

好吧，上源代码

 不错，我们要找的就是ck这个控件，并根据他是否选中来做一些业务处理，我主要是遍历，要获取某一行的checkbox是否被选中，请看这里

DataGridTemplateColumn _dataTemplate = dataGrid5.Columns[0] as DataGridTemplateColumn;            FrameworkElement element = null;            CheckBox ck=null;            for (int i = 0; i < dataGrid5.Items.Count-1; i++)            {                element = _dataTemplate.GetCellContent(dataGrid5.Items[i]);                ck=_dataTemplate.CellTemplate.FindName("ck",element) as CheckBox;                if (ck.IsChecked == true)                {                    MessageBox.Show(string.Format("StuName:{0}",(dataGrid5.Items[i] as Stu).StuName));                }            }

ok，又搞定...