MongoDataSource.MongoConnectionManager.AcquireConnection C# (CSharp) Method

        public override object AcquireConnection(object txn)
        {
            MongoDatabase database = null;
            if (string.IsNullOrWhiteSpace(_connectionString))
                UpdateConnectionString();

            if (!string.IsNullOrWhiteSpace(_connectionString))
            {
                MongoServer mongoinstance = new MongoClient(_connectionString).GetServer();

                if (string.IsNullOrWhiteSpace(DatabaseName))
                    throw new Exception("No database specified");

                database = mongoinstance.GetDatabase(DatabaseName);
            }
            else
            {
                throw new Exception("Can not connect to MongoDB with empty connection string");
            }

            return database;
        }