Mongodb初始——HelloWord

 static void Main(string[] args)        {            //链接字符串            string connectionString = "mongodb://localhost";            //数据库名            string databaseName = "myDatabase";            //集合名(相当于表)            string collectionName = "myCollection";            //定义Mongo服务            Mongo mongo = new Mongo(connectionString);            //获取databaseName对应的数据库，不存在则自动创建            MongoDatabase mongoDatabase = mongo.GetDatabase(databaseName) as MongoDatabase;            //获取collectionName对应的集合，不存在则自动创建            MongoCollection<Document> mongoCollection = mongoDatabase.GetCollection<Document>(collectionName) as MongoCollection<Document>;            //链接数据库            mongo.Connect();            try            {                //定义一个文档对象，存入一个键值对                Document doc = new Document();                doc["ID"] = 1;                doc["Msg"] = "helloword!";                //将这个文档对象插入集合                mongoCollection.Insert(doc);                //在集合中查找键值对为ID=1的文档对象                Document docFind = mongoCollection.FindOne(new Document { { "ID", 1 } });                //输出查找到的文档对象中键“Msg”对应的值，并输出                Console.WriteLine(Convert.ToString(docFind["Msg"]));                Console.ReadLine();            }            finally            {                //关闭链接                mongo.Disconnect();            }        }