使用linq和mongodb在用户指定的日期之间选择文档

I'm new to MongoDB and I've run in to a problem with a query. The query tries to find all documents between 2 DateTime values. I have previously been able to run a similar query with the desired result, however with a different database schema. By applying the same query with my current database schema the query doesn't work. The query is as follows: I'm new to MongoDB and I've run in to a problem