xConnectClientSubmit.cs

using Newtonsoft.Json;
using Sitecore.Analytics;
using Sitecore.Analytics.Model;
using Sitecore.Analytics.Tracking;
using Sitecore.Diagnostics;
using Sitecore.XConnect;
using Sitecore.XConnect.Client;
using Sitecore.XConnect.Client.Configuration;
using Sitecore.XConnect.Collection.Model;
using System;
using System.Collections.Generic;
using System.Linq;

namespace Yours
{
    public class ContactRepository : IContactRepository
    {
        private readonly ContactManager _contactmanager;

        public ContactRepository()
        {
            _contactmanager = Sitecore.Configuration.Factory.CreateObject("tracking/contactManager", true) as ContactManager;
        }

        public bool SaveContactData(ContactModel contactModel)
        {
            try
            {
                var contactReference = GetIdentifiedContactReference();

                using (var client = SitecoreXConnectClientConfiguration.GetClient())
                {
                    var contact = client.Get(contactReference, new ContactExpandOptions(PersonalInformation.DefaultFacetKey));

                    // Update your contact facets

                    client.Submit();
                    ReloadContact();
                }
                return true;
            }
            catch (Exception ex)
            {
                Log.Error("Error saving data to profile", ex, this);
                return false;
            }
        }

        private IdentifiedContactReference GetIdentifiedContactReference()
        {
            if (Tracker.Enabled && !Tracker.Current.IsActive)
            {
                Tracker.StartTracking();
            }

            if (Tracker.Current?.Contact == null)
            {
                Log.Warn("Tracker.Current?.Contact == null", this);
                return null;
            }

            if (Tracker.Current.Contact.IsNew)
            {
                Tracker.Current.Contact.ContactSaveMode = ContactSaveMode.AlwaysSave;
                _contactmanager.SaveContactToCollectionDb(Tracker.Current.Contact);
            }

            var id = Tracker.Current.Contact.Identifiers.FirstOrDefault();
            return Tracker.Current.Contact.IsNew || Tracker.Current.Contact.Identifiers.Count == 0
                ? new IdentifiedContactReference(Sitecore.Analytics.XConnect.DataAccess.Constants.IdentifierSource, Tracker.Current.Contact.ContactId.ToString("N"))
                : new IdentifiedContactReference(id.Source, id.Identifier);
        }

        private void ReloadContact()
        {
            if (Tracker.Current?.Session == null)
            {
                Log.Warn("Tracker.Current?.Contact == null", this);
                return;
            }
            _contactmanager.RemoveFromSession(Tracker.Current.Contact.ContactId);
            Tracker.Current.Session.Contact = _contactmanager.LoadContact(Tracker.Current.Contact.ContactId);
        }
    }
}