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我在切换选项卡时在选项卡控件中有三个 TabPage 我正在检查条件 如果是，则在选项卡页中添加了任何新控件，如果是，它必须停止转到下一个选项卡索引（这意味着它不应该触发事件选项卡选择索引已更改事件）。如何以编程方式执行此操作？