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Question

怎么判断一个字符串中是否包含特殊字符(!@#$%^&*()_+|这些).如果用正则表达式来判断该怎么写?

Answer 1

感觉用正则,和用数组也没什么区别吧,弄个数组,用indexOf判断呗

Answer 2

string input = "A(!@#23R1$%C^&*G()_+|B";        MatchCollection matches=Regex.Matches(input,@"[\(!@\#\$%\^&\*\(\)_\+\|]");
                if (matches.Count>0)
        {
            List<string> list=new List<string> ();
            foreach(Match m in matches)
            {
                list.Add(m.Value);
            }
            Response.Write("存在非法字符"+string.Join(",",list.ToArray()));
        }