RegularExpression正则表达式

1.必須為大寫字母，小寫字母，數字和符號的至少其中3種組合 The new password should contain any three of different syntax which is Upper Case Character, Lower Case Character, Numeral and Symbol.

[RegularExpression(@"^((?=.*\d)(?=.*[A-Z])(?=.*[\-\+\?\*\$\[\]\^\.\(\)\|`!@#%&_=:;',/])|(?=.*\d)(?=.*[a-z])(?=.*[A-Z])|(?=.*\d)(?=.*[a-z])(?=.*[\-\+\?\*\$\[\]\^\.\(\)\|`!@#%&_=:;',/])|(?=.*[a-z])(?=.*[A-Z])(?=.*[\-\+\?\*\$\[\]\^\.\(\)\|`!@#%&_=:;',/])).+$", ErrorMessage = DisplayMsgs.InvalidPassword)] public string NewPassword { get; set; }

2.必須為大寫字母，小寫字母，數字,長度須為6~8位 RegularExpression(@"[A-Za-z0-9]{6,8}", ErrorMessage = DisplayMsgs.InvalidEncryptKey)] [Required(ErrorMessage = "Encrypt Key" + DisplayMsgs.RequiredInput)] public String  EncryKey { get; set; }

string regex = @"^[A-Za-z0-9]{6,8}$"; if (string.IsNullOrEmpty(request.EncryptionKey) || !Regex.IsMatch(request.EncryptionKey.Trim(), regex)) { response.Status = ResponseStatuses.InvalidEncryKey;           return response; }

3.漢字

string text = "是不是汉字，ABC，keleyi.com";

for (int i = 0; i < text.Length; i++)

{

if (Regex.IsMatch(text[i].ToString(), @"[u4e00-u9fbb]+{1}quot;))

Console.WriteLine("是汉字");

else

Console.WriteLine("不是汉字");

}                 用ASCII码判断         string text = "是不是汉字，ABC,柯乐义";

for (int i = 0; i < text.Length; i++)

{

if ((int)text[i] > 127)

Console.WriteLine("是汉字");

else

Console.WriteLine("不是汉字");

}