c# - How do I properly format this MongoDB update clause? -


i have following document:

{ "_id": {     "$oid": "55e1f841ff149c2228a5c33d" }, "status": "open", "date": "8/30/2015", "contestname": "test contest", "searchablecontestname": "test contest", "classname": "test", "searchableclassname": "test", "judges": [     {         "name": "first last",         "isheadjudge": null,         "_id": {             "$oid": "55e20962ff149c1f70d1aab0"         },         "contestscores": null     },     {         "name": "another name",         "isheadjudge": null,         "_id": {             "$oid": "55e20947ff149c1f70d1aaaf"         },         "contestscores": [             1,             2,             3,             4,             5,             6         ]     },

...

there multiple judges in list. want selectively update contest scores "first last" name individual. i'm having difficulty figuring out proper way build filters this. have:

 public async void updatecontestscores(contestjudge judgedata, objectid contestid)     {         var contests = _db.getcollection<bsondocument>("contests");         var builder = builders<bsondocument>.filter;         var updatefilter = builder.eq("_id", contestid) & builder.eq("judges.name", judgedata.name);          var update = builders<bsondocument>.update.set("judges.contestscores", judgedata.contestscores);          await contests.updateoneasync(updatefilter, update);     }

this throws bulk update error of form. how go updating empty contest score field? i'm unsure of proper filter syntax such thing.


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