gist.cs

protected void Button1_Click(object sender, EventArgs e)
{
  // create a DataSet from the sample XML data source
  System.Data.DataSet ds = new System.Data.DataSet();
  ds.ReadXml(Server.MapPath("sample_db.xml"), System.Data.XmlReadMode.Auto);

  // load the template
  mailMerge1.LoadTemplate(Server.MapPath("template.docx"),
  TXTextControl.DocumentServer.FileFormat.WordprocessingML);

  // merge the template with data
  mailMerge1.Merge(ds.Tables[0]);

  // save the document as PDF into a byte array
  byte[] data;
  mailMerge1.SaveDocumentToMemory(out data,
  TXTextControl.BinaryStreamType.AdobePDF, null);

  // return the document to the browser for download
  Response.Clear();
  Response.AddHeader("content-disposition",
  String.Format("attachment;filename={0}", "created_by_txtextcontrol.pdf"));
  Response.ContentType = "application/pdf";
  Response.BinaryWrite(data);
  Response.End();
}