WP8：不能在列表框中获取复选框 [英] Wp8:Not able to get checkBox in listbox

问题描述

我不能够找到列表框XAML复选框：

I am not able to find checkbox in listbox xaml:

<ListBox x:Name="my_list" Grid.Row="0">
            <ItemsControl.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal" >
                        <CheckBox x:Name="cbx_state"  Tag="{Binding}"/>
                        <TextBlock x:Name="txt_string" Text="{Binding}" VerticalAlignment="Center" FontSize="34" />
                    </StackPanel>
                </DataTemplate>
            </ItemsControl.ItemTemplate>
 </ListBox>

我试图让cbk_state，这样我就可以设置它检查的财产，功能我用得到该复选框是

I am trying to get cbk_state so that i can set its checked property.The function i used to get the checkbox is

private void GetItemsRecursive(DependencyObject lb)
  {
      var childrenCount = VisualTreeHelper.GetChildrenCount(lb);

      for (int i = 0; i < childrenCount; i++)
      {
          var child = VisualTreeHelper.GetChild(lb, i);


          if (child is ListBoxItem)
          {
              MessageBox.Show(child.GetType().ToString());
              return;
          }

          GetItemsRecursive(child);
      }
  }

的问题是，我得到ChildrenCount为零每次。
我已经通过几种方法了，但没有这样的use.Also试图
的这个
，但在这里我没有得到ItemContainerGenerator的列表框。

The problem is that i am getting ChildrenCount as zero everytime. I have gone through several methods but no as such of use.Also tried this but here i am not getting ItemContainerGenerator for listBox.

我是新来WP8编程PLZ help.Thanks

I am new to wp8 programming plz help.Thanks

推荐答案

喜得到了解决的此处。有没有必要设置虚拟财产及其简单。

Hi got the solution here. there is no need to set virtualization property its simple.

private void GetItemsRecursive(DependencyObject lb)
{
    var childrenCount = VisualTreeHelper.GetChildrenCount(lb);

    for (int i = 0; i < childrenCount; i++)
    {
        DependencyObject child = VisualTreeHelper.GetChild(lb, i);

        if (child is CheckBox) // specific/child control 
        {
            CheckBox targeted_element = (CheckBox)child;

            targeted_element.IsChecked = true;

            if (targeted_element.IsChecked == true)
            {

                return;
            }
        }

        GetItemsRecursive(child);
    }
}

就在孩子的DependencyObject有点变化= VisualTreeHelper.GetChild （LB，I）;而不是VAR子

just a bit change at DependencyObject child = VisualTreeHelper.GetChild(lb, i); instead of var child

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