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Create and write to XML file in Dynamics AX

Contents

In this post let’s explore creating XML using X++ code in Dynamics AX.

The following example shows how to create and write data to an XML file by using the XmlDocument, XmlElement, and XmlWriter classes. It loops through all of the records in the CarTable and find all the fields in the table automatically by using the DictTable and DictField classes.

{% highlight csharp %} static void WriteXml(Args _args) {

XmlDocument xmlDoc;
XmlElement xmlRoot;
XmlElement xmlField;
XmlElement xmlRecord;
XMLWriter xmlWriter;

CarTable carTable;
DictTable dTable = new DictTable(tablenum(CarTable));
DictField dField;
int i, fieldId;
str value;
; 

#CarsXmlTags 

// Create a new object of the XmlDocument class
xmlDoc = XmlDocument::newBlank();

// Create the root node
xmlRoot = xmlDoc.createElement(#CarRootNode);

// Loop through all the records in the carTable
while select carTable
{
    // Create a XmlElement (record) to hold the
    // contents of the current record.
    xmlRecord = xmlDoc.createElement(#CarRecords);
    // Loop through all the fields in the record

    for (i=1; i<=dTable.fieldCnt(); i++)
    {
        // Get the fieldId from the field-count
        fieldId = dTable.fieldCnt2Id(i);
        
        // Find the DictField object that matches the fieldId
        dField = dTable.fieldObject(fieldId);
        
        // Skip system fields
        if (dField.isSystem())
        continue;

        // Create a new XmlElement (field) and
        // have the name equal to the name of the
        // dictField
        xmlField = xmlDoc.createElement(dField.name());
        
        // Convert values to string. I have just added
        // a couple of conversion as an example.
        // Use tableName.(fieldId) instead of fieldname
        // to get the content of the field.
        switch (dField.baseType())
        {
            case Types::Int64 :
                value = int642str(carTable.(fieldId));
            break;
            case Types::Integer :
                value = int2str(carTable.(fieldId));
            break;
            default :
                value = carTable.(fieldId);
            break;
        }

        // Set the innerText of the XmlElement (field)
        // to the value from the table
        xmlField.innerText(value);
         
        // Append the field as a child node to the record
        xmlRecord.appendChild(xmlField);
    }
     // Add the record as a child node to the root
    xmlRoot.appendChild(xmlRecord);
}
// Add the root to the XmlDocument
xmlDoc.appendChild(xmlRoot);
// Create a new object of the XmlWriter class
// in order to be able to write the xml to a file
xmlWriter = XMLWriter::newFile(@"c:tempcars.xml");
// Write the content of the XmlDocument to the
// file as specified by the XmlWriter
xmlDoc.writeTo(xmlWriter);

} {% endhighlight %}

The file that is created looks like the one in the following screenshot(only first part of the file is shown):

/imagesposts/create-and-write-to-xml-file-in-dynamics-ax_1.png

As you can see, this file is based on a standard XML format with tags and values only. You can, however, use tag attributes as well. To put the values from the table into tag attributes instead of their own tags, simply change the following code snippet in the example above

{% highlight csharp %}

// Set the innerText of the XmlElement (field) // to the value from the table xmlField.innerText(value);

// Append the field as a child node to the record xmlRecord.appendChild(xmlField);

{% endhighlight %}

With these lines:

{% highlight csharp %} // Add the attribute to the record xmlRecord.setAttribute(dField.name(), value); {% endhighlight %}

The file that is created now looks like the one in the following screenshot:

/imagesposts/create-and-write-to-xml-file-in-dynamics-ax_2.png

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