C# 连接MongoDB，含用户验证

配置文件中链接地址：mongodb://test:123456@192.168.168.186:9999/temp

读取配置文件：

 　　　　/// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="connectionStrings"></param>
        public MongodbHelper(string connectionStrings)
        {
            var mongoUrl = new MongoUrlBuilder(connectionStrings);
            string databaseName = mongoUrl.DatabaseName;
            MongoClientSettings mongoSettings = new MongoClientSettings();
            TimeSpan t = new TimeSpan(3000);
            mongoSettings.ConnectTimeout = t;//设置连接超时时长
            mongoSettings.MaxConnectionPoolSize = 2000;//设置连接池最大连接数
            MongoCredential credentials = MongoCredential.CreateCredential(databaseName, mongoUrl.Username, mongoUrl.Password);//添加用户名、密码
            mongoSettings.Credential = credentials;
            mongoSettings.Server = mongoUrl.Server;//服务器地址
            mongoSettings.ReadPreference = new ReadPreference(ReadPreferenceMode.Primary);

            MongoClient client = new MongoClient(mongoSettings);
        }