MVC———用自定义扩展类实现验证
废话少说，直接上图
→_→
NO.1
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NO.7
NO.8
NO.9
NO.10
NO.11
NO.12
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NO.14
NO.15
NO.16
NO.17
NO.18
展示效果~
百闻不如一见，百见不如一做，只有做了，才知道问题出现在哪儿，才能去解决问题。
废话少说，直接上图
NO.1
NO.2
NO.3
NO.4
NO.5
NO.6
NO.7
NO.8
NO.9
NO.10
NO.11
NO.12
NO.13
NO.14
NO.15
NO.16
NO.17
NO.18
展示效果~
