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...