public static string GenerateCheckCode(VALIDATE_CODE_TYPE type, int len)
{
char[] VALIDATE_CODE_CHARACTERS = { '2', '3', '4', '5', '6', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'R', 'S', 'T', 'W', 'X', 'Y' };
char code;
string checkCode = String.Empty;
System.Random random = new Random();
for (int i = 0; i < len; i++)
{
code = VALIDATE_CODE_CHARACTERS[random.Next(VALIDATE_CODE_CHARACTERS.Length)];
if (type == VALIDATE_CODE_TYPE.NUMBER)
{
if ((int)code < 48 || (int)code > 57)
{
i--;
continue;
}
}
else if (type == VALIDATE_CODE_TYPE.CHARACTER)
{
if ((int)code < 65 || (int)code > 90)
{
i--;
continue;
}
}
checkCode += code;
}
return(checkCode.ToLower());
}
public static string GenerateCheckCode(VALIDATE_CODE_TYPE type, int len)
{
char[] VALIDATE_CODE_CHARACTERS = { '2', '3', '4', '5', '6', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'R', 'S', 'T', 'W', 'X', 'Y' };
char code;
string checkCode = String.Empty;
System.Random random = new Random();
for (int i = 0; i < len; i++)
{
code = VALIDATE_CODE_CHARACTERS[random.Next(VALIDATE_CODE_CHARACTERS.Length)];
if (type == VALIDATE_CODE_TYPE.NUMBER)
{
if ((int)code < 48 || (int)code > 57)
{
i--;
continue;
}
}
else if (type == VALIDATE_CODE_TYPE.CHARACTER)
{
if ((int)code < 65 || (int)code > 90)
{
i--;
continue;
}
}
checkCode += code;
}
return checkCode.ToLower();
}
