The problem is that the new driver serializes dictionaries as a document by default. The MongoDB C# driver has 3 ways to serialize a dictionary: Document, ArrayOfArrays & ArrayOfDocuments (more on that in the docs). When it serializes as a document the dictionary keys are the names of the BSON element which has some limitations … Read more
The difference is in a syntax. Find and FindAsync both allows to build asynchronous query with the same performance, only FindAsync returns cursor which doesn’t load all documents at once and provides you interface to retrieve documents one by one from DB cursor. It’s helpful in case when query result is huge. Find provides you … Read more
There is ElemMatch var filter = Builders<Post>.Filter.ElemMatch(x => x.Tags, x => x.Name == “test”); var res = await collection.Find(filter).ToListAsync()
I think you’re looking for ReplaceOneAsync(): MyType myObject; // passed in var filter = Builders<MyType>.Filter.Eq(s => s.Id, id); var result = await collection.ReplaceOneAsync(filter, myObject)
Using the current version of the driver (v2.0) you can do that by passing a filter that matches everything: var documents = await SpeCollection.Find(_ => true).ToListAsync(); They have also added an empty filter (FilterDefinition.Empty) which will arrive in the next version of the driver (v2.1): var documents = await SpeCollection.Find(Builders<Project>.Filter.Empty).ToListAsync();