MongoDB简单的增删改

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using MongoDB.Driver;
using MongoDB.Bson;

namespace MongoDBTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            Init();
        }

        private void Init()
        {

            // MongoDB连接串，以[mongodb://]开头这里，我们连接的是本机的服务
            string connectionString = "mongodb://localhost:27017";

            // 连接到一个MongoServer上
            MongoServer server = MongoServer.Create(connectionString);
            // -------------------------------------------------------------------------

            // 打开数据库testdb
            MongoDatabase db = server.GetDatabase("testdb");

            // 获取集合employees
            MongoCollection<BsonDocument> collection = db.GetCollection<BsonDocument>("employees");

            // 创建一个employee
            BsonDocument employee = new BsonDocument 
            {
                { "name", "Ernest Hemingway" },
                { "title", "For Whom the Bell Tolls" },
                { "sex", "man" }
            };


            // 
            collection.Insert(employee);

            //一次插入多条
            //MongoCollection<BsonDocument> books;
            //BsonDocument[] batch = {
            //    new BsonDocument {
            //        { "author", "Kurt Vonnegut" },
            //        { "title", "Cat"s Cradle" }
            //    },
            //    new BsonDocument {
            //        { "author", "Kurt Vonnegut" },
            //        { "title", "Slaughterhouse-Five" }
            //    }
            //};
            //books.InsertBatch(batch);

            // 查询上面那个刚刚插进去的数据
            var query = new QueryDocument("sex", "man");

            //保存
            BsonDocument book = collection.FindOne(query);
            if (book != null)
            {
                book["title"] = "Cat"s Cradle";
                collection.Save(book);
            }

            //修改
            //MongoCollection<BsonDocument> books;
            //var query = new QueryDocument {
            //    { "author", "Kurt Vonnegut" },
            //    { "title", "Cats Craddle" }
            //};
            //            var update = new UpdateDocument {
            //    { "$set", new BsonDocument("title", "Cat"s Cradle") }
            //};
            //BsonDocument updatedBook = books.Update(query, update);

            // 遍历结果
            foreach (BsonDocument emp in collection.Find(query))
            {
                string str = string.Format("name:{0}	title:{1}	sex:{2}", emp["name"].AsString,
                    emp["title"].ToString(),emp["sex"].AsString);
                // BsonValue有两种取值方式，下面两个都用了一个是AsXXX,一个是ToXXX()
                MessageBox.Show(str);
            }
        }
    }
}

---Mongodb文档.

http://www.mongodb.org/display/DOCS/CSharp+Driver+Tutorial#CSharpDriverTutorial-FindOneandFindOneAsmethods