摘要: public static bool IsNumber(string s) { if (string.IsNullOrWhiteSpace(s)) return false; const string pattern = "^[0-9]*$"; Regex rx = new Regex(patter 阅读全文
posted @ 2021-02-26 16:16 马玲 阅读(826) 评论(0) 推荐(0) 编辑