asp.net（C#） 中 怎么使用 MongoDb

1. 先引用以下Dll（如果找不到 到gethub上下载源代码自己编译 特别是MongoDB.Driver.Legacy.dll 我自己找了半天没找到）：

MongoDB.Bson.dll

MongoDB.Driver.Core.dll

MongoDB.Driver.dll

MongoDB.Driver.Legacy.dll

2. 以下是测试代码：

using System;
using MongoDB.Bson;
using MongoDB.Driver;
using MongoDB.Driver.Linq;
using MongoDB.Driver.Builders;

namespace MongoDbDemo
{
    public class MongoDbHelper
    {
        public static void TestMongoDb()
        {
            var connectionString = "mongodb://192.168.201.140:27017";
            var client = new MongoClient(connectionString);
            var server = client.GetServer();
            var database = server.GetDatabase("test");
            var collection = database.GetCollection<Entity>("entities");

            var entity = new Entity { Name = "Tom" };
            collection.Insert(entity);
            var id = entity.Id;

            var query = Query<Entity>.EQ(e => e.Id, id);
            entity = collection.FindOne(query);

            entity.Name = "Dick";
            collection.Save(entity);

            var update = Update<Entity>.Set(e => e.Name, "Harry");
            collection.Update(query, update);

            collection.Remove(query);
        }
    }

    public class Entity
    {
        public ObjectId Id { get; set; }

        public string Name { get; set; }
    }
}