public async void CreateCollAsync(string name) { var filter = new BsonDocument(name: "name", value: name); var options = new ListCollectionNamesOptions { Filter = filter }; var col = await MongoDatabase.ListCollectionNamesAsync(options); var any = await col.AnyAsync(); if (!any) { await MongoDatabase.CreateCollectionAsync(name : name); _logger.LogInformation($"--- Create collection with name \"{name}\""); } }