MongoDb C# 操作键值为Array对象的方法

假如有一个班级Collection(Grade,Array Student),班级下有学生Student(Birthday,Sex,Name)

1、先定义一个fieldDeFinition和updateDeFinition

FieldDeFinition<BsonDocument> fieldDeFinition = "StudentList";
FilterDeFinitionBuilder<BsonDocument> filterDeFinitionZiBuilder = new FilterDeFinitionBuilder<BsonDocument>();
FilterDeFinition<BsonDocument> filterZi = filterDeFinitionZiBuilder.And(
   filterDeFinitionZiBuilder.Eq("Birthday", Convert.ToDateTime("2010-10-1")),
   filterDeFinitionZiBuilder.Eq("Sex", "male")
);
FilterDeFinition<BsonDocument> filterDeFinition = filterDeFinitionBuilder.And(
   filterDeFinitionBuilder.Eq("Grade", 3),
   filterDeFinitionBuilder.Elemmatch(fieldDeFinition, filterZi));

2、插入一个学生方法如下(这里构建的filterDeFinition不需要Elemmatch那句话）

UpdateDeFinitionBuilder<BsonDocument> updateDeFinitionBuilder = new UpdateDeFinitionBuilder<BsonDocument>();
var updateDeFinition = updateDeFinitionBuilder.AddToSet(fieldDeFinition, item);
var result2 =database.GetCollection<SchoolClass>("schoolclass").UpdateOne(filterDeFinition, updateDeFinition);
string info2 = $"匹配到：{result2.ModifiedCount}条，更新：{result2.ModifiedCount}条";

3、更新学生生日方法

UpdateDeFinitionBuilder<BsonDocument> updateDeFinitionBuilder = new UpdateDeFinitionBuilder<BsonDocument>();
var updateDeFinition = updateDeFinitionBuilder.Set("StudentList.$.Birthday", dateBirthday);
var result2 =database.GetCollection<SchoolClass>("schoolclass").UpdateOne(filterUpdateDeFinition, updateDeFinition);
string info2 = $"匹配到：{result2.ModifiedCount}条，更新：{result2.ModifiedCount}条";

其它类似操作仿照写即可