Skip to main content

Update exchange rate using Yahoo Web Service

In this example I am using Yahoo's online currency converter to update the exchange rates table. An idea would be to put this code in a batch class, which you can schedule to run daily.

static void YahooCurrencyUpdate(Args _args)
    Currency                    currency;
    ExchRates                   exchRates;
    str                         uri;
    str                         exchRate = "";
    str                         fromCurrency, toCurrency;

    System.Net.HttpWebRequest   httpRequest  = null;
    System.Net.HttpWebResponse  httpResponse = null;
    CLRObject                   clro         = null;
    System.IO.Stream            stream       = null;
    System.IO.StreamReader      streamReader = null;

    while select currency
        fromCurrency    = CompanyInfo::find().CurrencyCode;
        toCurrency      = currency.CurrencyCode;

        uri = "" + fromCurrency + toCurrency + "=X";

            new InteropPermission(InteropKind::ClrInterop).assert();
            clro         = System.Net.WebRequest::Create(uri);
            httpRequest  = clro;
            httpResponse = httpRequest.GetResponse();
            stream = httpResponse.GetResponseStream();
            streamReader = new System.IO.StreamReader(stream);
            exchRate = streamReader.ReadToEnd();

            if (str2num(exchRate) > 0)
                exchRates.CurrencyCode = toCurrency;
                exchRates.FromDate = systemdateget();
                exchRates.editExchRate(true, str2num(exchRate) * 100);

            throw error(AifUtil::getClrErrorMessage());

Additional information:
Microsoft provides a simple example on how to consume a web service. In their example they take a currency converter too.
The Microsoft whitepaper was written to illustrate on how to consume web services using references.

There are a lot of online services that provide exchange rates and methods to consume. Yahoo provides the days rates via the web services but not historical rates.

Other online services:,,

Popular posts from this blog

AX - How to use Map and MapEnumerator

Similar to Set class, Map class allows you to associate one value (the key) with another value. Both the key and value can be any valid X++ type, including objects. The types of the key and the value are specified in the declaration of the map. The way in which maps are implemented means that access to the values is very fast. Below is a sample code that sets and retrieves values from a map. static void checkItemNameAliasDuplicate(Args _args) { inventTable inventTable; Map map; MapEnumerator mapEnumerator; NameAlias nameAlias; int counter = 0; ; map = new Map(Types::String, Types::Integer); //store into map while select inventTable { nameAlias = inventTable.NameAlias; if (!map.exists(nameAlias)) { map.insert(nameAlias, 1); } else { map.insert(nameAlias, map.lookup(nameAlias) + 1); } } //retrieve fro

AX - How to use Set and SetEnumerator

The Set class is used for the storage and retrieval of data from a collection in which the values of the elements contained are unique and serve as the key values according to which the data is automatically ordered. You can create a set of primitive data types or complex data types such as a Class, Record or Container. Below is sample of a set of records. static void _Set(Args _args) {     CustTable       custTable;     Set             set = new Set(Types::Record);     SetEnumerator   setEnumerator;     ;     while select custTable     {         if (custTable && !         {             set.add(custTable);         }     }     if (!set.empty())     {         setEnumerator = set.getEnumerator();         setEnumerator.reset();         while (setEnumerator.moveNext())         {             custTable = setEnumerator.current();             info(strfmt("Customer: %1",custTable.AccountNum));         }     } } Common mistake when creating a set of recIds

Import document handling (attachment) files #MSDyn365FO

Out of the box you have limited data entities for migrating attachments. If you search what is already in the AOT, you will see a few various examples. I suggest you look at the LedgerJournalAttachmentsEntity as it is the simplest and cleans to copy from. I wont go into detail but I will give a quick run down of what it looks like. Use the DocuRefEntity as your main datasource. It does most of the work for you. Set your table you want to import for as the child datasource Add the Key You will need to add the postLoad method. There is minor code to update the virtual field FileContents. Below is an export I did for the general journal attachments. The import zip structure should be the same way. It will create the usual artifacts such as the excel, manifest and package header xml files. You will see a Resources folder under that. If you drill down to the resources you will see the attachments. This is an export and it used the document GUID for uniqueness. The other thing is the extensi