Indexing PDF documents with addtional search fields using SolrNet?

Question

I found this article useful when indexing documents, however, how can I attach additional fields so I can pass in, say, the ID of the document in our database for use in displaying the search results? I thought by using the Fields (Of the ExtractParameters class) property I could index additional data with the document, but that doesn't seem to work or that is not its function.

Example code:

var solr = ObjectLocator.Instance.Resolve<ISolrOperations<IndexDocument>>();
            var guid = Guid.NewGuid().ToString();
            using (var fileStream = System.IO.File.OpenRead(Server.MapPath("~/files/") + "greenroof.pdf"))
            {

                var response =
                    solr.Extract(
                        new ExtractParameters(fileStream, "greenRoof1234")
                        {
                            ExtractFormat = ExtractFormat.Text,
                            ExtractOnly = false,
                            Fields = new[] { new ExtractField("field1", "value1"), new ExtractField("field2", "value2") }




                        });
            }

Answer 1

It turned out not to be an issue with SOLRNet, but my knowledge of SOLR, in general. I needed to specify the fields in my schema. After i added the fields to my schema they were visible in my SOLR query.