zoukankan      html  css  js  c++  java
  • Mongodb入门代码

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;
    using MongoDB;


    namespace TestMongodb
    {
        public partial class _Default : System.Web.UI.Page
        {

            //链接字符串
            string connectionString = "mongodb://localhost";
            //数据库名
            string databaseName = "test";
            //集合名
            string collectionName = "myCollection";


            protected void Page_Load(object sender, EventArgs e)
            {
                //insertData();
                //deleteData();
                updateData();
                QueryAll();
            }

            private void updateData()
            {
                //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
                {

                    Document docFind = mongoCollection.FindOne(new Document { { "ID", 3 } });
                    docFind["Msg"] = "ssso";
                    mongoCollection.Update(docFind);
                }
                finally
                {
                    //关闭链接
                    mongo.Disconnect();
                }
               
            }

            public void insertData()
            {
                //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"] = 3;
                    doc["Msg"] = "helloword3!";
                    //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"]));
                }
                finally
                {
                    //关闭链接
                    mongo.Disconnect();
                }

            }

            public void deleteData()
            {
                //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
                {

                    Document docFind = mongoCollection.FindOne(new Document { { "ID", 1 } });
                    mongoCollection.Delete(docFind);
                }
                finally
                {
                    //关闭链接
                    mongo.Disconnect();
                }

            }

            public void QueryAll()
            {
                //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
                {
                    IEnumerable<Document> documents = mongoCollection.FindAll().Documents;
                    foreach (Document d in documents)
                    {
                        Response.Write(d["ID"].ToString() + d["Msg"].ToString() +"<br/>");
                    }
                }
                finally
                {
                    //关闭链接
                    mongo.Disconnect();
                }

            }

           

        }
    }

  • 相关阅读:
    OpenStack对象存储——Swift
    使用ssh对服务器进行登录
    在MacOs上配置Hadoop和Spark环境
    DOTA与面向对象的编程思想(3)——英雄的生命周期
    DOTA与面向对象的编程思想(2)——三层架构,让游戏跑起来
    DOTA与面向对象编程思想(1)——分述DOTA和面向对象思想
    再谈面向对象
    linux C 列出目录中的文件列表 包含文件的相关信息
    在Ubuntu 64位下搭建samba,实现linux与windows之间的资源共享,配置实现Ubuntu启动后samba服务与ssh服务开机自动启动
    LINUX下使用elasticsearch-jdbc工具实现MySQL同步到ElasticSearch 以及linux 64位centos系统安装jdk1.8
  • 原文地址:https://www.cnblogs.com/kenny999/p/2323047.html
Copyright © 2011-2022 走看看