test.cs

[HttpPost]
public IActionResult Merge(Template template) {

  // private OAuth settings
  var os = new TXTextControl.DocumentServices.DocumentProcessing.OAuth.OAuthSettings(
       "dsserver.EMRWLJ123pZirYLDNAF0gP7QzQaB8OfH",
       "OGC24l8BcjVpc123Ht0gHJhDjtYJP70a");

  // create a new DocumentProcessing object with OAuth settings
  DocumentProcessing s_dp = new DocumentProcessing("https://trial.dsserver.io", os);

  // load the merge data from JSON text file
  List<Report> journal = 
    JsonConvert.DeserializeObject<List<Report>>(
      System.IO.File.ReadAllText("App_Data/data.json"));

  // create a new MergeBody object with merge data and template
  MergeBody mergeBody = new MergeBody() {
    Template = Convert.FromBase64String(template.Document),
    MergeData = journal
  };

  // merge the document
  var results = s_dp.Merge(mergeBody, ReturnFormat.TX).Result;

  return Ok(results[0]);
}