MongoDb在C#中使用

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.Serialization;
using System.Data;
using System.Data.SqlClient;
using MongoDB.Bson;
using MongoDB.Driver;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            //连接信息            string conn = "mongodb://localhost";
            string database = "demoBase";
            string collection = "demoCollection";

            MongoServer mongodb = MongoServer.Create(conn);//连接数据库            MongoDatabase mongoDataBase = mongodb.GetDatabase(database);//选择数据库名            MongoCollection mongoCollection = mongoDataBase.GetCollection(collection);//选择集合，相当于表
            mongodb.Connect();

            //普通插入            var o = new { Uid = 123, Name = "xixiNormal", PassWord = "" };
            mongoCollection.Insert(o);

            //对象插入            Person p = new Person { Uid = 124, Name = "xixiObject", PassWord = "" };
            mongoCollection.Insert(p);

            //BsonDocument 插入            BsonDocument b = new BsonDocument();
            b.Add("Uid", 125);
            b.Add("Name", "xixiBson");
            b.Add("PassWord", "");
            mongoCollection.Insert(b);

            Console.ReadLine();
        }
    }

    class Person {
        public int Uid;
        public string Name;
        public string PassWord;

    }
}

结果：

都是上述配置写的，程序会自动建立对应的库和集合。

下面的操作不上完整代码了:

            /*
             * sql : SELECT * FROM table 
             *
             */
            MongoCursor<Person> p = mongoCollection.FindAllAs<Person>();

            /*
             * sql : SELECT * FROM table WHERE Uid > 10 AND Uid < 20
             *
             */
            QueryDocument query = new QueryDocument();
            BsonDocument b = new BsonDocument();
            b.Add("$gt", 10);
            b.Add("$lt", 20);
            query.Add("Uid", b);

            MongoCursor<Person> m = mongoCollection.FindAs<Person>(query);

            /*--
             * sql : SELECT COUNT(*) FROM table WHERE Uid > 10 AND Uid < 20
             *--
             */
            long c = mongoCollection.Count(query);

            /*--
            * sql : SELECT Name FROM table WHERE Uid > 10 AND Uid < 20
            *--
            */
            QueryDocument query = new QueryDocument();
            BsonDocument b = new BsonDocument();
            b.Add("$gt", 10);
            b.Add("$lt", 20);
            query.Add("Uid", b);
            FieldsDocument f = new FieldsDocument();
            f.Add("Name", 1);

            MongoCursor<Person> m = mongoCollection.FindAs<Person>(query).SetFields(f);
            /*--
            * sql : SELECT * FROM table ORDER BY Uid DESC LIMIT 10,10
            *--
            */
            QueryDocument query = new QueryDocument();
            SortByDocument s = new SortByDocument();
            s.Add("Uid", -1);//-1=DESC
            MongoCursor<Person> m = mongoCollection.FindAllAs<Person>().SetSortOrder(s).SetSkip(10).SetLimit(10);

官方驱动查询：

Query.All("name", "a", "b");//通过多个元素来匹配数组
 
 Query.And(Query.EQ("name", "a"), Query.EQ("title", "t"));//同时满足多个条件
 
 Query.EQ("name", "a");//等于
 
 Query.Exists("type", true);//判断键值是否存在
 
 Query.GT("value", 2);//大于>
 
 Query.GTE("value", 3);//大于等于>=
 
 Query.In("name", "a", "b");//包括指定的所有值,可以指定不同类型的条件和值
 
 Query.LT("value", 9);//小于<
 
 Query.LTE("value", 8);//小于等于<=
 
 Query.Mod("value", 3, 1);//将查询值除以第一个给定值,若余数等于第二个给定值则返回该结果
 
 Query.NE("name", "c");//不等于
 
 Query.Nor(Array);//不包括数组中的值
 
 Query.Not("name");//元素条件语句
 
 Query.NotIn("name", "a", 2);//返回与数组中所有条件都不匹配的文档
 
 Query.Or(Query.EQ("name", "a"), Query.EQ("title", "t"));//满足其中一个条件
 
 Query.Size("name", 2);//给定键的长度
 
 Query.Type("_id", BsonType.ObjectId );//给定键的类型
 
 Query.Where(BsonJavaScript);//执行JavaScript
 
 Query.Matches("Title",str);//模糊查询 相当于sql中like -- str可包含正则表达式