MongoDB在运行时使用c＃driver＆gt;添加查询2.0

Question

我希望有可能在运行时添加查询。我的解决方案与＃34; old＆＃34;司机是这样的。

    // A List does hold the queries
    List<IMongoQuery> QueryConditionList = new List<IMongoQuery>();

    void AddQuery(string sType, string sField, string sValue)
    {
        // I can add of course several Queries
        if (sType == "EQ")
            QueryConditionList.Add(Query.EQ(sField, sValue));
        else if (sType == "GT")
            QueryConditionList.Add(Query.GT(sField, sValue));
        else if (sType == "LT")
            QueryConditionList.Add(Query.LT(sField, sValue));
    }
    // At some point you can execute the queries
    void ExecuteQuery()
    {
        // Combine all to on "And" Query ("Or" would be possible as well)
        IMongoQuery query = Query.And(QueryConditionList);
        // Then I can get my cursor with a Find
        MongoCursor<BsonDocument> mc = MoCollection.Find(query);

        // Do anything with the cursor...
    }

这确实很有效。但我不知道如何使用新语法来做到这一点。 我的所有方法都不是真正的动态。像：

var builder = Builders<BsonDocument>.Filter;
var filter = builder.Eq(Field1, Value1) & builder.Eq(Field2, Value2);

我想我可以添加一些像

这样的过滤器

filter.add(builder.Eq(Field3, Value3)); // But of course I  can't