MergeController.cs

/*-----------------------------------------------------------------
** Post method
** // POST api/merge?format=[PDF|PDFA|DOCX|DOC]
**---------------------------------------------------------------*/
public ResponseResults Post([FromBody]dynamic mailMergeRequestObject,
    [FromUri]string format)
{
    // create a new ResponseResults object that contains the 
    // resulting document as a byte[]
    ResponseResults results = new ResponseResults();

    // helper object of type 'MailMergeRequestObject' to extract the
    // JSON data (template and data)
    MailMergeRequestObject mmroJSONResult =
        (MailMergeRequestObject)JsonConvert.DeserializeObject(
            Convert.ToString(mailMergeRequestObject),
            typeof(MailMergeRequestObject));

    // create a new ServerTextControl
    using (TXTextControl.ServerTextControl tx =
        new TXTextControl.ServerTextControl())
    {
        tx.Create();
        // create a new MailMerge instance
        using (TXTextControl.DocumentServer.MailMerge mm =
            new TXTextControl.DocumentServer.MailMerge())
        {
            mm.TextComponent = tx;
            // load the template from the helper object
            mm.LoadTemplateFromMemory(mmroJSONResult.Template,
                TXTextControl.DocumentServer.FileFormat.InternalUnicodeFormat);

            // create a new DataSet and the given XML data into it
            DataSet ds = new DataSet();
            XmlDocument doc =
                JsonConvert.DeserializeXmlNode(mmroJSONResult.Data);
            XmlNodeReader reader = new XmlNodeReader(doc);
            ds.ReadXml(reader, XmlReadMode.Auto);

            // merge the template with the DataSet
            mm.Merge(ds.Tables[0]);

            byte[] data;
            BinaryStreamType streamType = BinaryStreamType.AdobePDF;

            // define the export format based on the given Uri parameter
            switch (format.ToUpper())
            {
                case "PDFA":
                    streamType = BinaryStreamType.AdobePDFA; break;
                case "DOCX":
                    streamType = BinaryStreamType.WordprocessingML; break;
                case "DOC":
                    streamType = BinaryStreamType.MSWord; break;
            }

            // save the document and fill the 'ResponseResults' object
            mm.SaveDocumentToMemory(out data, streamType, null);
            results.Document = data;
        }
    }

    // return the 'ResponseResults' object
    return results;
}