FireLance/FireLance/FirelanceMgr.cs

using Firelance.Interfaces;
using MongoDB.Bson;
using MongoDB.Driver;
using System;

namespace Firelance
{
    public class FirelanceMgr : IFlcBaseDBConnection, IFlcMongoDBConnecton
    {
        public IMongoDatabase Database { get; private set; }

        public void OpenConnection(string dbLocation, int port)
        {
            var client = new MongoClient($"mongodb://{dbLocation}:{port}");
            var settings = new MongoDatabaseSettings { GuidRepresentation = GuidRepresentation.Standard };

            Database = client.GetDatabase(dbLocation, settings);
        }

        public bool IsConnectionOpen()
        {
            int connectionCnt = 0;

            try { connectionCnt = Database.Client.ListDatabases().ToList().Count; }
            catch { }

            return (connectionCnt > 0) ? true : false;
        }

        public void CloseCurrentConnection()
        {
            throw new NotSupportedException("MongoDB does not support closing connections.");
        }
    }
}