HelloSSL.cs

using System;
using System.Collections.Generic;
using MongoDB.Bson;
using MongoDB.Driver;
using System.Security.Cryptography.X509Certificates;
using System.Security.Authentication;
using System.Net.Security;

namespace HelloMongoCSharp
{
	class HelloSSL 
	{
		public static void Main (string[] args)
		{
            ConnectSSL(args);
		}

        public async static void ConnectSSL(string[] args) {
            try {
                var clientSettings = MongoClientSettings.FromUrl(new MongoUrl(args[0]));
                clientSettings.SslSettings = new SslSettings();
                clientSettings.UseSsl = true;
                clientSettings.SslSettings.EnabledSslProtocols = SslProtocols.Default;
               clientSettings.SslSettings.ServerCertificateValidationCallback = delegate (object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
                {
                    foreach (var item in chain.ChainElements)
                    {
                        foreach (var elemStatus in item.ChainElementStatus)
                        {
                            Console.WriteLine( item.Certificate.Subject + "->" + elemStatus.StatusInformation);
                        }
                    }

                    return true; //NOT FOR PRODUCTION: this line will bypass certificate errors.
                };
                //+= validationCallback;
                Console.WriteLine("Attempting connection to: " + args[0]);
                var client = new MongoClient(clientSettings);

                Console.WriteLine(client);
                var dbs = client.GetServer().GetDatabaseNames();
                foreach(var db in dbs) {
                    Console.WriteLine(db);
                }
                Console.WriteLine("Press <return> to exit.");
                Console.ReadLine();
            } catch (Exception e) {
                Console.WriteLine("error--");
                Console.WriteLine(e.Message);
            } 
        }
    }
}