Upload JSON file from local system using x++

 Upload JSON file from local system using x++ In D365FO.

    FileUploadTemporaryStorageResult    fileUpload  = File::GetFileFromUser() as FileUploadTemporaryStorageResult;
    System.IO.Stream                    stream      = fileUpload.openResult();
    str                                 responceJson;

    using (var reader = new System.IO.StreamReader(stream))
    {
        responceJson = reader.ReadToEnd();
    } 

Keep daxing!!