Selected Dropdown value is not inserted into database but textbox value does

Question

Here what I have tried to achieve is that a region has many zones so that zone is populated from a database then a user inserts the name of the region in the textbox then he selects different zones from the dropdown list the selected zone value should keep once selected and clicks the submit button. When the submit button has clicked the name of the region is inserted into the database but the selected dropdown list value is not inserted. here is the code that I have tried

the region controller

// GET: Regions
        public ActionResult Index()
        {
            var regions = db.Regions.Include(r => r.Zone);
            return View(regions.ToList());
        }



 // GET: Regions/Create
        public ActionResult Create()
        {
            Regions zones = new Regions();
            zones.regioness = PopulateZones();
            ViewBag.ZoneID = new SelectList(db.Zones, "ZoneID", "ZoneName");
            return View(zones);
        }


public List<SelectListItem> PopulateZones()
        {
            List<SelectListItem> zones = new List<SelectListItem>();
            string conString = ConfigurationManager.ConnectionStrings["StoreContext"].ConnectionString;
            using (SqlConnection con = new SqlConnection(conString))
            {
                using (SqlCommand cmd = new SqlCommand("SELECT ID, ZoneName FROM Zones", con))
                {
                    con.Open();
                    using (SqlDataReader sdr = cmd.ExecuteReader())
                    {
                        while (sdr.Read())
                        {
                            fruits.Add(new SelectListItem
                            {
                                Text = sdr["ZoneName"].ToString(),
                                Value = sdr["ID"].ToString()
                            });
                        }
                    }
                    con.Close();
                }
            }
            return zones;
        }




  [HttpPost]
    public ActionResult Create([Bind(Include = "ID,RegionName")] Regions reg)
    {
        reg.regioness = PopulateZones();
        foreach (SelectListItem item in reg.regioness)
        {
            if (item.Value == reg.ID.ToString())
            {
                item.Selected = true;
                db.Regions.Add(reg);
                db.SaveChanges();
                break;
            }

        }

        return View(reg);
    }

And my Region model is

 public class Regions
    {
        public int ID { get; set; }
        public string RegionName { get; set; }
        [NotMapped]
        public List<SelectListItem> regioness { get; set; }
        public int? ZoneID { get; set; }
        public virtual Zones Zone { get; set; }
        
    }

and Zone model class

 public class Zones
    {
        [Key]
        public int ID { get; set; }
        public string ZoneName { get; set; }
        public virtual ICollection<Regions> Regions { get; set; }
    }

and my create view in region

@model RegionAndZones.Models.Regions

@{
    ViewBag.Title = "Create";
}

<h2>Create</h2>

@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>Regions</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.RegionName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.RegionName, new { htmlAttributes = new { @class = "form-control" } })
                    @Html.ValidationMessageFor(model => model.RegionName, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
             @Html.LabelFor(model => model.ZoneID, "ZoneID", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @*@Html.DropDownList("ZoneID", null, htmlAttributes: new { @class = "form-control" })*@
                @Html.ValidationMessageFor(model => model.ZoneID, "", new { @class = "text-danger" })
                @Html.DropDownListFor(m => m.ID, new SelectList(Model.regioness, "Value", "Text"), "Please select")
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>

<script src="~/Scripts/jquery-1.10.2.min.js"></script>
<script src="~/Scripts/jquery.validate.min.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>

is there any one who can help me any help would be appreciated