InsertOne mongodb in .net core does not return result

Question

i am new in mongodb And when i use InsertOne Or InsertMany methods does not return any result. how can i be sure data were inserted. I Use MongoDB.Driver Version 2.10.3 Sorry for my language

I haven't used C# in awhile but it looks like they introduced an await operator like JavaScript. My guess is that's your issue. — Chance
– Chance, Commented Apr 15, 2020 at 23:38
@Chance I believe C# had await before it was introduced in JS :) — mickl
– mickl, Commented Apr 16, 2020 at 0:08
@mickl interesting, I had no idea. I really need to look into C# again. I moved on to Rails and then Node when it was released. I think I left .Net behind sometime around 3.5/4.0. I remember really missing the lambdas that were introduced with LINQ but JS eventually got them. — Chance
– Chance, Commented Apr 16, 2020 at 1:04

mickl · Accepted Answer · 2020-04-16 00:12:58Z

2

You can check the implementation here.

Basically whenever something goes wrong like there's a connection errror or your insert violates unique key you will get a MongoWriteException. So your code may look like this:

try
{
    collection.InsertOne(document);
}
catch (MongoWriteException e)
{
    Console.WriteLine(e.Message);
}

There's another method in MongoDB - bulkWrite - which might execute some operations successfully and fail for the other ones. In such case MongoDB .NET driver returns an instance of BulkWriteResult<TDocument> class.

edited Apr 16, 2020 at 0:12

answered Apr 16, 2020 at 0:07

mickl

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