使用clsControl的集合。

Use a collection of clsControl.

如何获取唯一标记值？ SELECT DISTINCT函数是否可用于所有标记值？

How do I get the unique tag values? Is there a SELECT DISTINCT function available for all of the tag values?

不，您只需循环查看是否已添加该标记值。

No, you just loop through and check whether or not you''ve already added that one.