Regex rex = new Regex(@"[/u4E00-/u9FFF]");var result = rex.Match(registReq.UserName);if (result.Success){ mResp.ErrorInfo = "用戶名不能是漢字!"; return true;}Regex rex2 = new Regex(@"^/w$");result = rex2.Match(registReq.UserName);if (!result.Success){ mResp.ErrorInfo = "用戶名包含非法字符!"; return true;}
[...]是字符限定
^...$ 是匹配整個(gè)字符串
/w 是字母數(shù)字下劃線漢字
即整個(gè)字符串必須是字母數(shù)字下劃線
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