单击TabControl的当前tabItem (在WPF中)

<TabControl x:Name="myTabControl">
    <TabItem Header="Tab 1">
        <!-- Tab 1 content -->
    </TabItem>
    <TabItem Header="Tab 2">
        <!-- Tab 2 content -->
    </TabItem>
    <TabItem Header="Tab 3">
        <!-- Tab 3 content -->
    </TabItem>
</TabControl>

// 获取当前选中的TabItem
TabItem selectedTabItem = myTabControl.SelectedItem as TabItem;

// 模拟单击操作
selectedTabItem.RaiseEvent(new RoutedEventArgs(ButtonBase.ClickEvent));