如何使用C＃驅動程序在mongodb嵌套數組中搜索

Question

有誰知道使用c＃驅動程序在mongodb中搜索嵌套數組嗎？

例如：我有一個Person類型的文檔列表。 Person實體的示例如下

 {
    "Name": "HumanName",
    "Occupation": "Student",
    "Class": [
        {
            "ClassType": "Math",
            "Professors": [
                {
                    "Name": "Jimmy"
                },
                {
                    "Name": "Smith"
                }
            ]
        },
        {
            "ClassType": "English",
            "Professors": [
                {
                    "Name": "John"
                }
            ]
        }
    ]
}

我該如何寫一個查詢，將職業學生，數學班和史密斯教授的所有文檔都帶給我？

我嘗試使用elemMatch匹配以下內容，但它不起作用

        var builder = Builders<Person>.Filter;
        var filters = builder.Eq(x => x.Occupation, "Student");

        filters = filters & builder.ElemMatch(x => x.Class, x=> x.ClassType =="Math");
        filters = filters & builder.ElemMatch(x => x.Class[-1].Professors, x=> x.Name =="Smith");

        var result = await Mongo.Persons.Find(filters).SingleOrDefaultAsync();

Answer 1

var collection = database.GetCollection<Person>("Person");
var list = collection.AsQueryable()
            .Where(x => x.Ocupation == "Student" 
                     && x.Class.Any(y => y.ClassType == "Math" 
                     && y.Proffessors.Any(z => z.Name == "Smith")))
            .ToList();