1. you need to add a RequiredFieldValidator
2. use
\w+
or use wnglish(高处不胜寒) 's expression since it is more portable
2. use
\w+
or use wnglish(高处不胜寒) 's expression since it is more portable
^代表开始
$代表结束
\w代表单词字符。
意即 必须以单词字符开始和结束,可以有任意多个