Mongodb 学习笔记(三) .net core SDK

 首先添加 Nuget包  MongoDB.Driver

　创建一个Model。

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public class Student {       public ObjectId _id { get; set; }     public string name { get; set; }     public int age { get; set; }     public Address address { get; set; } } public class Address{     public string province { get; set; }     public string city { get; set; } }

　与Mongodb建立连接：

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var client = new MongoClient("mongodb://127.0.0.1:27017");   //与Mongodb建立连接。 var db = client.GetDatabase("test");　　//获取数据库 var collection = db.GetCollection<BsonDocument>("student");   //选择操作集合

　增删改查：

 Student student = new Student()
 {
 　　name = "lilie",
　　 age = 11,
 　　address = new Address() { province = "GuangDong",city "shenzhen"}
 };
 
 collection.InsertOne(student.ToBsonDocument()); //插入数据
 var filter = Builders<BsonDocument>.Filter.Eq("name", "lilie"); //声明过滤条件
 var list = collection.Find(filter).As<Student>().ToList();  //查询数据
 collection.UpdateOne(filter,Builders<BsonDocument>.Update.Set("age", "24")); //更新数据
 collection.DeleteOne(filter); //删除数据