MongoDB的简单操作（asp.net）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using MongoDB.Driver;
using MongoDB.Bson;
using MongoDB.Driver.Builders;

namespace web
{
public class MongoHelper
{
/// <summary>
/// 数据库连接
/// </summary>
private static string conn = "mongodb://127.0.0.1:27017";
/// <summary>
/// 指定的数据库
/// </summary>
private static string dbName = "mydb";
/// <summary>
/// 指定的表
/// </summary>
private static string tbName = "test";

/// <summary>
/// 添加
/// </summary>
/// <param name="text">内容</param>
/// <param name="articleId">文章ID</param>
/// <param name="channelId">频道ID</param>
/// <returns></returns>
public static void Add(User t)
{
//创建数据连接
MongoServer server = MongoServer.Create(conn);
//获取指定数据库
MongoDatabase db = server.GetDatabase(dbName);
//获取表
MongoCollection col = db.GetCollection(tbName);
//插入
col.Insert(t);

}

/// <summary>
/// 根据ObjectID 删除
/// </summary>
/// <param name="objId"></param>
public static void Delete(int objId)
{
//创建数据连接
MongoServer server = MongoServer.Create(conn);
//获取指定数据库
MongoDatabase db = server.GetDatabase(dbName);
//获取表
MongoCollection<User> col = db.GetCollection<User>(tbName);

IMongoQuery query = Query.EQ("_id", objId);

col.Remove(query);
}

/// <summary>
/// 根据ObjectID 修改
/// </summary>
public static void Update(User t)
{
//创建数据连接
MongoServer server = MongoServer.Create(conn);
//获取指定数据库
MongoDatabase db = server.GetDatabase(dbName);
//获取表
MongoCollection<User> col = db.GetCollection<User>(tbName);

BsonDocument bd = BsonExtensionMethods.ToBsonDocument(t);

IMongoQuery query = Query.EQ("_id", t.id);

col.Update(query, new UpdateDocument(bd));

}

//<summary>
//根据ObjectID 查询
//</summary>
public static User SelectOne(int objId)
{
//创建数据连接
MongoServer server = MongoServer.Create(conn);
//获取指定数据库
MongoDatabase db = server.GetDatabase(dbName);
//获取表
MongoCollection<User> col = db.GetCollection<User>(tbName);
//条件查询
return col.FindOne(Query.EQ("_id", objId));
}

//<summary>
//查询所有
//</summary>
public static List<User> SelectAll()
{
List<User> list = new List<User>();

//创建数据连接
MongoServer server = MongoServer.Create(conn);
//获取指定数据库
MongoDatabase db = server.GetDatabase(dbName);
//获取表
MongoCollection<User> col = db.GetCollection<User>(tbName);
//查询全部
list.AddRange(col.FindAll());
return list;

}

}
}