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 mongoCollection = mongoDatabase.GetCollection(collectionName) as MongoCollection;
            //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 mongoCollection = mongoDatabase.GetCollection(collectionName) as MongoCollection;
            //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 mongoCollection = mongoDatabase.GetCollection(collectionName) as MongoCollection;
            //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 mongoCollection = mongoDatabase.GetCollection(collectionName) as MongoCollection;
            //链接数据库
            mongo.Connect();
            try
            {
                IEnumerable documents = mongoCollection.FindAll().Documents;
                foreach (Document d in documents)
                {
                    Response.Write(d["ID"].ToString() + d["Msg"].ToString() +"
");
                }
            }
            finally
            {
                //关闭链接
                mongo.Disconnect();
            }

        }

       

    }
}

转载于:https://www.cnblogs.com/kenny999/archive/2012/01/15/2323047.html