MongoDB_Update

using MongoDB.Bson;
using MongoDB.Bson.IO;
using MongoDB.Bson.Serialization;
using MongoDB.Bson.Serialization.Attributes;
using MongoDB.Driver;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace M101DotNet
{
    class Program
    {
        static void Main(string[] args)
        {
            MainAsync(args).GetAwaiter().GetResult();
            Console.WriteLine("Press enter");
            Console.ReadLine();

        }

        static async Task MainAsync(string[] args)
        {
            var client = new MongoClient();
            var db = client.GetDatabase("Phucdb");
            var col = db.GetCollection<BsonDocument>("widgets");
            // Drop r Insert
            await db.DropCollectionAsync("widgets");
            var docs = Enumerable.Range(0, 10).Select(i => new BsonDocument("_id", i).Add("x", i));
            await col.InsertManyAsync(docs);
            //Update
            var result = await col.ReplaceOneAsync(
                new BsonDocument("_id", 5),
                new BsonDocument("x", 30));
            // Xuat
            await col.Find(new BsonDocument()).ForEachAsync(x => Console.WriteLine(x));
        }
    }
}