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Visual Basic 6.0 Examples

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(Visual Basic 6.0) 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 ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Dim rest As New ChilkatRest
Dim success As Long

'  URL: http://www.mnb.hu/arfolyamok.asmx
Dim bTls As Long
bTls = 0
Dim port As Long
port = 80
Dim bAutoReconnect As Long
bAutoReconnect = 1
success = rest.Connect("www.mnb.hu",port,bTls,bAutoReconnect)
If (success <> 1) Then
    Debug.Print "ConnectFailReason: " & rest.ConnectFailReason
    Debug.Print rest.LastErrorText
    Exit Sub
End If

Dim xml As New ChilkatXml
xml.Tag = "soapenv:Envelope"
success = xml.AddAttribute("xmlns:soapenv","http://schemas.xmlsoap.org/soap/envelope/")
success = xml.AddAttribute("xmlns:web","http://www.mnb.hu/webservices/")
xml.UpdateChildContent "soapenv:Header",""
xml.UpdateChildContent "soapenv:Body|web:GetCurrencies",""

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

Dim sbRequestBody As New ChilkatStringBuilder
success = xml.GetXmlSb(sbRequestBody)
Dim sbResponseBody As New ChilkatStringBuilder
success = rest.FullRequestSb("POST","/arfolyamok.asmx",sbRequestBody,sbResponseBody)
If (success <> 1) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

Dim respStatusCode As Long
respStatusCode = rest.ResponseStatusCode
If (respStatusCode >= 400) Then
    Debug.Print "Response Status Code = " & respStatusCode
    Debug.Print "Response Header:"
    Debug.Print rest.ResponseHeader
    Debug.Print "Response Body:"
    Debug.Print sbResponseBody.GetAsString()
    Exit Sub
End If

Debug.Print "response status code = " & respStatusCode

Dim xmlResponse As New ChilkatXml
success = xmlResponse.LoadSb(sbResponseBody,1)
Debug.Print 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
Dim resultEncoded As String
resultEncoded = xmlResponse.GetChildContent("s:Body|GetCurrenciesResponse|GetCurrenciesResult")
Debug.Print resultEncoded

'  Entity decode the result to get XML.
Dim sbResult As New ChilkatStringBuilder
success = sbResult.Append(resultEncoded)
success = sbResult.EntityDecode()

'  Load it into XML.
Dim xmlResult As New ChilkatXml
success = xmlResult.LoadSb(sbResult,1)
Debug.Print 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>
' 

 

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