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C# Validations for Social Security Numbers, VAT Codes and tax identification numbers

Home Page: https://randommer.io/SocialNumber/VatValidator

C# 100.00%

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countryvalidator's Issues

Support for Norwegian "National Identification Number Name"?

Hi,
I wonder if "National Identification Number Name" for Norway is implemented?
There is code for it in the repository?

VAT numbers for Belgium will now also start with BE1

The first companies in Belgium have a company number / VAT Number that starts with BE1xxxxxxxxx instead of just with a BE0xxxxxxxxx.
Could you modify this so that these are validated correctly ?
Much appreciated !!

Official Belgium website mentioning this : https://economie.fgov.be/en/news/enterprise-numbers-starting-1

Is this repo maintained?

Is this still actively maintained or should it be considered archived?

Valid Ssn number returned as invalid (for Belgium)

Hi,

For several cases, SSN number in Belgium failed to validate correctly. Indeed, in BelgiumValidation class, line 50 :
bool isValid = ModFunction(nrToCheck).ToString() == checkDigit;
At that time, if checkDigit has a number below 10, it fails. It seems that int type doesn't keep the 0 in the beginning of a number.

For exemple :
checkDigit returns '09' and ModFunction returns '9'.

You can try with this SSN : 96091736909

Thanks for your time !

Current Dutch VAT numbers do not validate

Hi,

I am not really sure about this, but aparrently the Netherlands has changed the format of their VAT numbers. The number NL000099998B57 (example taken from this webpage of the Dutch goverment) does not validate.

Validate Swiss TVA

It does not allow me to validate the Swiss tva, the error is:
"input string was not in a correct format".
My code:

When I enter the same data in the demo validator it works, where can I check the format of the string I have to pass to the "CountryValidator" method?
https://randommer.io/SocialNumber/VatValidator

Doc format:
CHE-xxx.xxx.xxx TVA

Finnish VAT number spec has been changed since 1.1.2023

CountryValidator/CountryValidator/CountriesValidators/FinlandValidator.cs

Lines 30 to 69 in 169bf00

 public override ValidationResult ValidateIndividualTaxCode(string id) 

 { 

 if (!Regex.IsMatch(id, "^[0-9]{6}[-+A][0-9]{3}[0-9ABCDEFHJKLMNPRSTUVWXY]$")) 

 { 

 return ValidationResult.Invalid("Invalid code"); 

 } 

 var day = int.Parse(id.Substring(0, 2)); 

 var month = int.Parse(id.Substring(2, 2)); 

 var year = int.Parse(id.Substring(4, 2)); 

 var centuries = new Dictionary<char, int>(){ 

 { '+', 1800 }, 

 { '-', 1900}, 

 { 'A', 2000} 

 }; 

 year = centuries[id[6]] + year; 

 try 

 { 

 DateTime date = new DateTime(year, month, day); 

 if (date > DateTime.Now) 

 { 

 return ValidationResult.InvalidDate(); 

 } 

 } 

 catch 

 { 

 return ValidationResult.InvalidDate(); 

 } 

 var individual = int.Parse(id.Substring(7, 3)); 

 if (individual < 2) 

 { 

 return ValidationResult.Invalid("Invalid"); 

 } 

 var n = id.Substring(0, 6) + id.Substring(7, 3); 

 long intn = long.Parse(n); 

 return "0123456789ABCDEFHJKLMNPRSTUVWXY"[(int)intn % 31] == id[10] ? ValidationResult.Success() : ValidationResult.InvalidChecksum(); 

 }

There are new separator characters being introduced in addition to -, + and A.

More information and test data available here: https://dvv.fi/en/reform-of-personal-identity-code

Contribution about China VAT validation logic

I'm interested in contributing VAT validation code of China. Is this project still in maintainence?

Wrong calculation for Israel ID

HI.
Israel ID allows digits only, but your logic considers the following value "AA1404105" as valid.
I suggest adding

 public override ValidationResult ValidateIndividualTaxCode(string ssn)
        {
            ssn = ssn.RemoveSpecialCharacthers();
            if (ssn?.Length != 9)
            {
                return ValidationResult.Invalid("Invalid length. The code must have 9 digits");
            }

            **if (!ssn.All(char.IsDigit))
            {
                return ValidationResult.Invalid("Only digits are allowed");
            }**

Stack overflow on VATIN verification

foreach (var supportedCountry in CountryValidation.CountryValidator.SupportedCountries)
{
    var countryEnum = Enum.Parse<CountryValidation.Country>(supportedCountry);
    var result = validator.ValidateVAT("K7399859412", countryEnum);
    if (result.IsValid)
    {
        return true;
    }
}

anghelvalentin / countryvalidator Goto Github PK

countryvalidator's People

Contributors

Stargazers

Watchers

Forkers

countryvalidator's Issues

Support for Norwegian "National Identification Number Name"?

VAT numbers for Belgium will now also start with BE1

Is this repo maintained?

Valid Ssn number returned as invalid (for Belgium)

Current Dutch VAT numbers do not validate

Validate Swiss TVA

Finnish VAT number spec has been changed since 1.1.2023

Contribution about China VAT validation logic

Wrong calculation for Israel ID

Stack overflow on VATIN verification

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	public override ValidationResult ValidateIndividualTaxCode(string id)
	{
	if (!Regex.IsMatch(id, "^[0-9]{6}[-+A][0-9]{3}[0-9ABCDEFHJKLMNPRSTUVWXY]$"))
	{
	return ValidationResult.Invalid("Invalid code");
	}

	var day = int.Parse(id.Substring(0, 2));
	var month = int.Parse(id.Substring(2, 2));
	var year = int.Parse(id.Substring(4, 2));
	var centuries = new Dictionary<char, int>(){
	{ '+', 1800 },
	{ '-', 1900},
	{ 'A', 2000}
	};
	year = centuries[id[6]] + year;
	try
	{
	DateTime date = new DateTime(year, month, day);
	if (date > DateTime.Now)
	{
	return ValidationResult.InvalidDate();
	}
	}
	catch
	{

	return ValidationResult.InvalidDate();
	}

	var individual = int.Parse(id.Substring(7, 3));
	if (individual < 2)
	{
	return ValidationResult.Invalid("Invalid");
	}
	var n = id.Substring(0, 6) + id.Substring(7, 3);
	long intn = long.Parse(n);
	return "0123456789ABCDEFHJKLMNPRSTUVWXY"[(int)intn % 31] == id[10] ? ValidationResult.Success() : ValidationResult.InvalidChecksum();

	}