private bool IsPhone(string phone) { //电信手机号码正则 string dianxin = @"^1[3578][01379]\d{8}$"; Regex dReg = new Regex(dianxin); //联通手机号正则 string liantong = @"^1[34578][01256]\d{8}$"; Regex tReg = new Regex(liantong); //移动手机号正则 string yidong = @"^(134[012345678]\d{7}|1[34578][012356789]\d{8})$"; Regex yReg = new Regex(yidong); if(dReg.IsMatch(phone) || tReg.IsMatch(phone)|| yReg.IsMatch(phone)) { return true; } return false; }