WPF怎么寻找在ItemTemplate内部的各种控件

有如下控件

<Grid>
        <ListBox x:Name="lb">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal">
                        <CheckBox x:Name="ck"></CheckBox>
                        <TextBlock x:Name="tb" Text="{Binding StuId}"></TextBlock>
                        <TextBlock Text="{Binding StuName}"></TextBlock>
                        <TextBlock Text="{Binding Sex}"></TextBlock>
                        <TextBlock Text="{Binding Pwd}"></TextBlock>
                        <Button Content="修改" Width="100" Height="30"></Button>
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
        <Button Content="Show" Width="100" Height="30" Click="Button_Click"></Button>
    </Grid>

 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

http://msdn.microsoft.com/zh-cn/library/bb613579(v=vs.100).aspx

所以方法如下

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;
        }

        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<ContentPresenter>(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

<DataGrid x:Name="dataGrid5"
                      AutoGenerateColumns="False"
                      AlternatingRowBackground="LightSteelBlue"
                      RowBackground="Azure"
                      IsReadOnly="True">
                <DataGrid.Columns>
                    <DataGridTemplateColumn>
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate>
                                <CheckBox x:Name="ck"></CheckBox>
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                    </DataGridTemplateColumn>
                    <DataGridTemplateColumn>
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate>
                                <TextBlock Text="{Binding StuName}"></TextBlock>
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                    </DataGridTemplateColumn>
                    <DataGridTemplateColumn Header="StuName">
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate>
                                <StackPanel Orientation="Horizontal" 
                                            VerticalAlignment="Center">
                                    <TextBlock Padding="5,0,5,0"
                                               Text="{Binding Resume}"/>
                                </StackPanel>
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                        <DataGridTemplateColumn.CellEditingTemplate>
                            <DataTemplate>
                                <StackPanel Orientation="Horizontal" 
                                            VerticalAlignment="Center">
                                    <TextBlock Padding="5,0,5,0"
                                               Text="{Binding Resume}"/>
                                </StackPanel>
                            </DataTemplate>
                        </DataGridTemplateColumn.CellEditingTemplate>
                    </DataGridTemplateColumn>
                </DataGrid.Columns>
            </DataGrid>

 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http://blog.sina.com.cn/s/blog_541e699d0100wjs9.html

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...