(PowerShell) Magyar Nemzeti Bank (MNB) Get Currencies

The Magyar Nemzeti Bank (MNB) is the central bank of Hungary. In this role, its primary objective is to achieve and maintain price stability. The MNB website is available to visitors in both Hungarian and English. The MNB provides the Arfolyam (trans. Exchange Rate) API, which can be used to retrieve current and historic currency exchange rates. This service uses SOAP calls issued in XML format.

This example gets a list of currencies.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$rest = New-Object Chilkat.Rest

# URL: http://www.mnb.hu/arfolyamok.asmx
$bTls = $false
$port = 80
$bAutoReconnect = $true
$success = $rest.Connect("www.mnb.hu",$port,$bTls,$bAutoReconnect)
if ($success -ne $true) {
    $("ConnectFailReason: " + $rest.ConnectFailReason)
    $($rest.LastErrorText)
    exit
}

# --------------------------------------------------------------------------------
# Also see Chilkat's Online WSDL Code Generator
# to generate code and SOAP Request and Response XML for each operation in a WSDL.
# --------------------------------------------------------------------------------

$xml = New-Object Chilkat.Xml
$xml.Tag = "soapenv:Envelope"
$xml.AddAttribute("xmlns:soapenv","http://schemas.xmlsoap.org/soap/envelope/")
$xml.AddAttribute("xmlns:web","http://www.mnb.hu/webservices/")
$xml.UpdateChildContent("soapenv:Header","")
$xml.UpdateChildContent("soapenv:Body|web:GetCurrencies","")

$rest.AddHeader("Content-Type","text/xml")
$rest.AddHeader("SOAPAction","/webservices/MNBArfolyamServiceSoap/GetCurrencies")
$rest.AddHeader("Accept","application/xml")

$sbRequestBody = New-Object Chilkat.StringBuilder
$xml.GetXmlSb($sbRequestBody)
$sbResponseBody = New-Object Chilkat.StringBuilder
$success = $rest.FullRequestSb("POST","/arfolyamok.asmx",$sbRequestBody,$sbResponseBody)
if ($success -ne $true) {
    $($rest.LastErrorText)
    exit
}

$respStatusCode = $rest.ResponseStatusCode
if ($respStatusCode -ge 400) {
    $("Response Status Code = " + $respStatusCode)
    $("Response Header:")
    $($rest.ResponseHeader)
    $("Response Body:")
    $($sbResponseBody.GetAsString())
    exit
}

$("response status code = " + $respStatusCode)

$xmlResponse = New-Object Chilkat.Xml
$xmlResponse.LoadSb($sbResponseBody,$true)
$($xmlResponse.GetXml())

# The XML response contains this:
# <?xml version="1.0" encoding="utf-8" ?>
# <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
#     <s:Body>
#         <GetCurrenciesResponse xmlns="http://www.mnb.hu/webservices/" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
#             <GetCurrenciesResult>&lt;MNBCurrencies&gt;&lt;Currencies&gt;&lt;Curr&gt;HUF&lt;/Curr&gt;&lt;Curr&gt;EUR&lt;/Curr&gt;&lt;Curr&gt;AUD&lt;/Curr&gt; ... &lt;/MNBCurrencies&gt;</GetCurrenciesResult>
#         </GetCurrenciesResponse>
#     </s:Body>
# </s:Envelope>

# Get the GetCurrenciesResult
$resultEncoded = $xmlResponse.GetChildContent("s:Body|GetCurrenciesResponse|GetCurrenciesResult")
$($resultEncoded)

# Entity decode the result to get XML.
$sbResult = New-Object Chilkat.StringBuilder
$sbResult.Append($resultEncoded)
$sbResult.EntityDecode()

# Load it into XML.
$xmlResult = New-Object Chilkat.Xml
$xmlResult.LoadSb($sbResult,$true)
$($xmlResult.GetXml())

# The result is this:

# <?xml version="1.0" encoding="utf-8" ?>
# <MNBCurrencies>
#     <Currencies>
#         <Curr>HUF</Curr>
#         <Curr>EUR</Curr>
#         <Curr>AUD</Curr>
#         <Curr>BGN</Curr>
#         <Curr>BRL</Curr>
#         <Curr>CAD</Curr>
#         <Curr>CHF</Curr>
#         <Curr>CNY</Curr>
#         <Curr>CZK</Curr>
#         <Curr>DKK</Curr>
#         <Curr>GBP</Curr>
#         <Curr>HKD</Curr>
#         <Curr>HRK</Curr>
#         <Curr>IDR</Curr>
#         <Curr>ILS</Curr>
#         <Curr>INR</Curr>
#         <Curr>ISK</Curr>
#         <Curr>JPY</Curr>
#         <Curr>KRW</Curr>
#         <Curr>MXN</Curr>
#         <Curr>MYR</Curr>
#         <Curr>NOK</Curr>
#         <Curr>NZD</Curr>
#         <Curr>PHP</Curr>
#         <Curr>PLN</Curr>
#         <Curr>RON</Curr>
#         <Curr>RSD</Curr>
#         <Curr>RUB</Curr>
#         <Curr>SEK</Curr>
#         <Curr>SGD</Curr>
#         <Curr>THB</Curr>
#         <Curr>TRY</Curr>
#         <Curr>UAH</Curr>
#         <Curr>USD</Curr>
#         <Curr>ZAR</Curr>
#         <Curr>ATS</Curr>
#         <Curr>AUP</Curr>
#         <Curr>BEF</Curr>
#         <Curr>BGL</Curr>
#         <Curr>CYN</Curr>
#         <Curr>CSD</Curr>
#         <Curr>CSK</Curr>
#         <Curr>DDM</Curr>
#         <Curr>DEM</Curr>
#         <Curr>EEK</Curr>
#         <Curr>EGP</Curr>
#         <Curr>ESP</Curr>
#         <Curr>FIM</Curr>
#         <Curr>FRF</Curr>
#         <Curr>GHP</Curr>
#         <Curr>GRD</Curr>
#         <Curr>IEP</Curr>
#         <Curr>ITL</Curr>
#         <Curr>KPW</Curr>
#         <Curr>KWD</Curr>
#         <Curr>LBP</Curr>
#         <Curr>LTL</Curr>
#         <Curr>LUF</Curr>
#         <Curr>LVL</Curr>
#         <Curr>MNT</Curr>
#         <Curr>NLG</Curr>
#         <Curr>OAL</Curr>
#         <Curr>OBL</Curr>
#         <Curr>OFR</Curr>
#         <Curr>ORB</Curr>
#         <Curr>PKR</Curr>
#         <Curr>PTE</Curr>
#         <Curr>ROL</Curr>
#         <Curr>SDP</Curr>
#         <Curr>SIT</Curr>
#         <Curr>SKK</Curr>
#         <Curr>SUR</Curr>
#         <Curr>VND</Curr>
#         <Curr>XEU</Curr>
#         <Curr>XTR</Curr>
#         <Curr>YUD</Curr>
#     </Currencies>
# </MNBCurrencies>
#