，WPF中怎么获取<DataTemplate>中的控件

求助，WPF中如何获取<DataTemplate>中的控件

<ListView>
???????????????<ListView.View>
???????????????????<GridView>
???????????????????????<GridViewColumn>
???????????????????????????<GridViewColumn.CellTemplate>
???????????????????????????????<DataTemplate>
                                    <Grid>
                                        <RichTextBox>
                                            <FlowDocument>
                                                 <Paragraph>
                                                      <DockPanel>
                                                          <RichTextBox x:Name="RtBox">
                                                               <FlowDocument>
                                                                    <Paragraph>
                                                                        <Image Source=""/>  
 
                                                                        <Run Text="{Binding Text}"/>
                                                                    <Paragraph>
                                                                </FlowDocument>
                                                          </RichTextBox>
                                                      </DockPanel>
                                                 </Paragraph>
                                             </FlowDocument>
                                        </RichTextBox>
                                    </Grid> 
 
                                </DataTemplate>
                            </GridViewColumn.CellTemplate>
                        </GridViewColumn>
                   <GridView>
              ?<ListView.View>
          <ListView>
????????????????? 

                                                        x:Name="RtBox">

        private void RtBox_Loaded_1(object sender, RoutedEventArgs e)
        {
            var richTextBox= （RichTextBox）sender;
        }

sender就是你想要拿到的richtextbox
[解决办法]
前提是你绑定的itemsource有东西～不然listview不会做出来这个element的～