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Create passwords using the birthday

Create passwords using the birthday

Fabio Mans

7y971Learn iOS Programming

Please, I need to create a C # algorithm that does not allow the client to create passwords using the birthday date.

Can you help me please?

Example: 10/16/1972

Can not be = Month / Day (MMDD). 1016

Can not be = Month / Month (MMMM). 1010

Can not be = Month / Year (MMAA). 1072

Can not be = Day / Day (DDDD). 1616

Can not be = Day / Month (DDMM). 1610

It can not be = Day / Year (DDAA). 1672

It can not be Year / Day (AADD).

ix. Year / Month (AAMM).

x. Year / Year (YYYY). Example: 7272

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Salman Beg7y ago
Hi Fabio,

Here is the complete code for validating the birthday and for generating password you can write your own code,
using System.Text.RegularExpressions;
namespace TestConsole
{
class Program
{
static void Main(string[] args)
{
bool isValidBirthday = ValidateBirthday("10/16/1972");
if(isValidBirthday)
{
//Write your code to generate password
}
else
{
//Invalid Birthday
}
}
public static bool ValidateBirthday(string date)
{
//var regex = new Regex(@"(((0|1)[0-9]|2[0-9]|3[0-1])\/(0[1-9]|1[0-2])\/((19|20)\d\d))$");//dd/mm/yyyy
var regex = new Regex(@"(((0[1-9]|1[0-2])\/(0|1)[0-9]|2[0-9]|3[0-1])\/((19|20)\d\d))$");//mm/dd/yyyy
bool isValid = regex.IsMatch(date);
return isValid;
}
}
}
Here i have mentioned the validation for both mm/dd/yyyy and dd/mm/yyy. Whichever you want you can use it. Let me know if you need any other help. Mark as answer if it helps.

Thanks. Cheers!!.
Fabio Mans7y ago
I think of creating this way, is that correct?

private static bool ValidarSenhaDataAniversario(int senha, DateTime aniversario)
{
string senhaInformada = senha.ToString();
var mesDia = $"{aniversario.Month:d2}{aniversario.Day:d2}";
if (senha.ToString().Equals(mesDia)) return false;
var mesMes = $"{aniversario.Month:d2}{aniversario.Month:d2}";
if (senhaInformada == mesMes) return false;
return true;
}