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(C#) Hungary NAV Query Taxpayer

Demonstrates the queryTaxpayer request for the Hungarian NAV Online Invoicing System REST API v2.0.

Note: This example requires Chilkat v9.5.0.83 or greater.

For more information, see https://onlineszamla.nav.gov.hu/api/files/container/download/Online%20Szamla_Interfesz%20specifik%C3%A1ci%C3%B3_EN_v2.0.pdf

Chilkat .NET Downloads

Chilkat .NET Framework

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// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// Build the following XML:

// <?xml version="1.0" encoding="UTF-8"?>
// <QueryTaxpayerRequest xmlns="http://schemas.nav.gov.hu/OSA/2.0/api">
// 	<header>
// 		<requestId>RID215118906689</requestId>
// 		<timestamp>2019-09-11T11:11:08.579Z</timestamp>
// 		<requestVersion>2.0</requestVersion>
// 		<headerVersion>1.0</headerVersion>
// 	</header>
// 	<user>
// 		<login>lwilsmn0uqdxe6u</login>
// 		<passwordHash>2F43840A882CFDB7DB0FEC07D419D030D864B47B6B541DC280EF81B937B7A176E33C052B0D26638CC18A7A2C08D8D311733078A774BF43F6CA57FE8CD74DC28E</passwordHash>
// 		<taxNumber>11111111</taxNumber>
// 		<requestSignature>C5ADE8A2231C509D2887E6C2C4406CC5F72CA25B070AD3E94FADFA3F91A8A3667AF882DEDC7D67E9086E3D34A95886E929ACD8C924CD1E8357C89BEF43BA9126</requestSignature>
// 	</user>
// 	<software>
// 		<softwareId>123456789123456789</softwareId>
// 		<softwareName>string</softwareName>
// 		<softwareOperation>LOCAL_SOFTWARE</softwareOperation>
// 		<softwareMainVersion>string</softwareMainVersion>
// 		<softwareDevName>string</softwareDevName>
// 		<softwareDevContact>string</softwareDevContact>
// 		<softwareDevCountryCode>HU</softwareDevCountryCode>
// 		<softwareDevTaxNumber>string</softwareDevTaxNumber>
// 	</software>
// 	<taxNumber>22222222</taxNumber>
// </QueryTaxpayerRequest>

bool success;
Chilkat.Crypt2 crypt = new Chilkat.Crypt2();

Chilkat.CkDateTime dtNow = new Chilkat.CkDateTime();
dtNow.SetFromCurrentSystemTime();
Debug.WriteLine(dtNow.GetAsTimestamp(false));

// The hash algorithm for the password is SHA512 (not SHA3-512).
crypt.HashAlgorithm = "sha512";
crypt.EncodingMode = "hex";
string myPassword = "my-password";
string passwordHash = crypt.HashStringENC(myPassword);

// Generate a random request ID like "RID215118906689"
Chilkat.Prng prng = new Chilkat.Prng();
Chilkat.StringBuilder sbRequestId = new Chilkat.StringBuilder();
sbRequestId.Append("RID");
sbRequestId.Append(prng.RandomString(12,true,false,false));
Debug.WriteLine("generated requestId = " + sbRequestId.GetAsString());

// Calculate the requestSignature
// IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
// IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
// IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
// IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
// IMPORTANT: This example requires Chilkat v9.5.0.83 or greater.  The SHA3 hash algorithm is implemented in Chilkat v9.5.0.83, but not in earlier versions.
crypt.HashAlgorithm = "sha3-512";
string signatureKey = "ce-8f5e-215119fa7dd621DLMRHRLH2S";

Chilkat.StringBuilder sbFinalHashBase = new Chilkat.StringBuilder();

// First append the timestamp because we are going to remove certain chars/parts.
sbFinalHashBase.Append(dtNow.GetAsTimestamp(false));
int numReplaced = sbFinalHashBase.Replace("Z","");
numReplaced = sbFinalHashBase.Replace("-","");
numReplaced = sbFinalHashBase.Replace(":","");
numReplaced = sbFinalHashBase.Replace("T","");

// Prepend the requestId and append the signatureKey
sbFinalHashBase.Prepend(sbRequestId.GetAsString());
sbFinalHashBase.Append(signatureKey);

string requestSignature = crypt.HashStringENC(sbFinalHashBase.GetAsString());

Chilkat.Xml xml = new Chilkat.Xml();
xml.Tag = "QueryTaxpayerRequest";
xml.AddAttribute("xmlns","http://schemas.nav.gov.hu/OSA/2.0/api");
xml.UpdateChildContent("header|requestId",sbRequestId.GetAsString());
xml.UpdateChildContent("header|timestamp",dtNow.GetAsTimestamp(false));
xml.UpdateChildContent("header|requestVersion","2.0");
xml.UpdateChildContent("header|headerVersion","1.0");
xml.UpdateChildContent("user|login","lwilsmn0uqdxe6u");
xml.UpdateChildContent("user|passwordHash",passwordHash);
xml.UpdateChildContent("user|taxNumber","11111111");
xml.UpdateChildContent("user|requestSignature",requestSignature);
xml.UpdateChildContent("software|softwareId","123456789123456789");
xml.UpdateChildContent("software|softwareName","string");
xml.UpdateChildContent("software|softwareOperation","LOCAL_SOFTWARE");
xml.UpdateChildContent("software|softwareMainVersion","string");
xml.UpdateChildContent("software|softwareDevName","string");
xml.UpdateChildContent("software|softwareDevContact","string");
xml.UpdateChildContent("software|softwareDevCountryCode","HU");
xml.UpdateChildContent("software|softwareDevTaxNumber","string");
xml.UpdateChildContent("taxNumber","22222222");

// POST the XML to https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/queryTaxpayer
Chilkat.Http http = new Chilkat.Http();
http.Accept = "application/xml";
http.SetRequestHeader("Content-Type","application/xml");
string endpoint = "https://api-test.onlineszamla.nav.gov.hu/invoiceService/v2/queryTaxpayer";
Chilkat.HttpResponse resp = http.PostXml(endpoint,xml.GetXml(),"utf-8");
if (http.LastMethodSuccess == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Debug.WriteLine("Response status code = " + Convert.ToString(resp.StatusCode));

Chilkat.Xml respXml = new Chilkat.Xml();
respXml.LoadXml(resp.BodyStr);
Debug.WriteLine("Response body:");
Debug.WriteLine(respXml.GetXml());

// The result looks like this:

// <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
// <QueryTaxpayerResponse xmlns="http://schemas.nav.gov.hu/OSA/2.0/api" xmlns:ns2="http://schemas.nav.gov.hu/OSA/2.0/data">
//     <header>
//         <requestId>RID847153193061</requestId>
//         <timestamp>2020-03-24T16:00:34Z</timestamp>
//         <requestVersion>2.0</requestVersion>
//         <headerVersion>1.0</headerVersion>
//     </header>
//     <result>
//         <funcCode>OK</funcCode>
//     </result>
//     <software>
//         <softwareId>123456789123456789</softwareId>
//         <softwareName>string</softwareName>
//         <softwareOperation>LOCAL_SOFTWARE</softwareOperation>
//         <softwareMainVersion>string</softwareMainVersion>
//         <softwareDevName>string</softwareDevName>
//         <softwareDevContact>string</softwareDevContact>
//         <softwareDevCountryCode>HU</softwareDevCountryCode>
//         <softwareDevTaxNumber>string</softwareDevTaxNumber>
//     </software>
//     <infoDate>1993-01-01T00:00:00.000+01:00</infoDate>
//     <taxpayerValidity>true</taxpayerValidity>
//     <taxpayerData>
//         <taxpayerName>some taxpayer name</taxpayerName>
//         <taxNumberDetail>
//             <ns2:taxpayerId>22222222</ns2:taxpayerId>
//             <ns2:vatCode>2</ns2:vatCode>
//         </taxNumberDetail>
//         <taxpayerAddressList>
//             <taxpayerAddressItem>
//                 <taxpayerAddressType>HQ</taxpayerAddressType>
//                 <taxpayerAddress>
//                     <ns2:countryCode>HU</ns2:countryCode>
//                     <ns2:postalCode>1121</ns2:postalCode>
//                     <ns2:city>BUDAPEST 12</ns2:city>
//                     <ns2:streetName>ABCD</ns2:streetName>
//                     <ns2:publicPlaceCategory>UTCA</ns2:publicPlaceCategory>
//                     <ns2:number>20</ns2:number>
//                 </taxpayerAddress>
//             </taxpayerAddressItem>
//         </taxpayerAddressList>
//     </taxpayerData>
// </QueryTaxpayerResponse>

// Use this online tool to generate parsing code from sample XML: 
// Generate Parsing Code from XML

string QueryTaxpayerResponse_xmlns = respXml.GetAttrValue("xmlns");
string QueryTaxpayerResponse_xmlns_ns2 = respXml.GetAttrValue("xmlns:ns2");
string requestId = respXml.GetChildContent("header|requestId");
string timestamp = respXml.GetChildContent("header|timestamp");
string requestVersion = respXml.GetChildContent("header|requestVersion");
string headerVersion = respXml.GetChildContent("header|headerVersion");
string funcCode = respXml.GetChildContent("result|funcCode");
string softwareId = respXml.GetChildContent("software|softwareId");
string softwareName = respXml.GetChildContent("software|softwareName");
string softwareOperation = respXml.GetChildContent("software|softwareOperation");
string softwareMainVersion = respXml.GetChildContent("software|softwareMainVersion");
string softwareDevName = respXml.GetChildContent("software|softwareDevName");
string softwareDevContact = respXml.GetChildContent("software|softwareDevContact");
string softwareDevCountryCode = respXml.GetChildContent("software|softwareDevCountryCode");
string softwareDevTaxNumber = respXml.GetChildContent("software|softwareDevTaxNumber");
string infoDate = respXml.GetChildContent("infoDate");
string taxpayerValidity = respXml.GetChildContent("taxpayerValidity");
string taxpayerName = respXml.GetChildContent("taxpayerData|taxpayerName");
int ns2_taxpayerId = respXml.GetChildIntValue("taxpayerData|taxNumberDetail|ns2:taxpayerId");
int ns2_vatCode = respXml.GetChildIntValue("taxpayerData|taxNumberDetail|ns2:vatCode");
string taxpayerAddressType = respXml.GetChildContent("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddressType");
string ns2_countryCode = respXml.GetChildContent("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:countryCode");
int ns2_postalCode = respXml.GetChildIntValue("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:postalCode");
string ns2_city = respXml.GetChildContent("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:city");
string ns2_streetName = respXml.GetChildContent("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:streetName");
string ns2_publicPlaceCategory = respXml.GetChildContent("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:publicPlaceCategory");
int ns2_number = respXml.GetChildIntValue("taxpayerData|taxpayerAddressList|taxpayerAddressItem|taxpayerAddress|ns2:number");

 

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