Insert element into nested array in Mongodb

Question

I have this :

{
  \"_id\" : ObjectId(\"4fb4fd04b748611ca8da0d48\"),
  \"Name\" : \"Categories\",
  \"categories\" : [{
      \"_id\" : ObjectId(\"4fb4fd04b74         


        

Answer 1

Adding an example for my case. Did work but without the dollar sign when entering inside an array:

public async Task AddCustomMetadata()
       {
            Dictionary dic = new Dictionary();
            dic.Add("EntityCustomMetadataFieldId", "5bf81296-feda-6447-b45a-08d5cb91211c");
            var filter = Builders.Filter.Eq("_id", "6c7bb4a5-d7cc-4a8d-aa92-b0c89ea0f7fe");
            var update = Builders.Update.Push("CustomMetadata.Fields", dic);
            await _context.BsonAssets.FindOneAndUpdateAsync(filter, update);
        }