访问自定义选项卡项控件中的复选框的WPF C#

<TabControl>
    <TabItem Header="Tab 1">
        <StackPanel>
            <CheckBox Content="Checkbox 1" />
            <CheckBox Content="Checkbox 2" />
        </StackPanel>
    </TabItem>
    <TabItem Header="Tab 2">
        <StackPanel>
            <CheckBox Content="Checkbox 3" />
            <CheckBox Content="Checkbox 4" />
        </StackPanel>
    </TabItem>
</TabControl>

// 获取选项卡控件
TabControl tabControl = FindName("tabControl") as TabControl;

// 获取选中的选项卡项
TabItem selectedTabItem = tabControl.SelectedItem as TabItem;

// 获取选项卡项中的复选框
StackPanel stackPanel = selectedTabItem.Content as StackPanel;
List<CheckBox> checkboxes = stackPanel.Children.OfType<CheckBox>().ToList();

// 遍历复选框并进行操作
foreach (CheckBox checkbox in checkboxes)
{
    // 执行相应的操作，例如获取复选框的状态
    bool isChecked = checkbox.IsChecked ?? false;
    // ...
}