How to add Dropdownlist in Current View in MVC.

I have below View

@model ERP_App.Models.UserTypeMV

@{
    ViewBag.Title = "New User Type";
}

<h2>CreateUserType</h2>

@using (Html.BeginForm("CreateUserType", "User", FormMethod.Post)) 
{
    @Html.AntiForgeryToken()
    
    <div class="form-horizontal">       
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        @Html.HiddenFor(u => u.UserTypeID)
        <div class="form-group">
            @Html.LabelFor(model => model.UserType, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.UserType, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.UserType, "", new { @class = "text-danger" })
            </div>
            <hr />
            @Html.ValidationSummary(true, "", new { @class = "text-danger" })
            @Html.HiddenFor(u => u.UserTypeID)
            <div class="form-group">
                @Html.LabelFor(model => model.Designation, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.Designation, new { htmlAttributes = new { @class = "form-control" } })
                    @Html.ValidationMessageFor(model => model.Designation, "", new { @class = "text-danger" })
                </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>
}

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

controller

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using DataBaseLayer;
using ERP_App.Models;

namespace ERP_App.Controllers
{
    public class UserController : Controller
    {
        private BusinessERPDbEntities DB = new BusinessERPDbEntities();
        // GET: User
        public ActionResult AllUserTypes()
        {
            if (string.IsNullOrEmpty(Convert.ToString(Session["UserName"])))
            {
                RedirectToAction("Login", "Home");
            }

            var userid = 0;
            var usertypeid = 0;
            int.TryParse(Convert.ToString(Session["UserID"]), out userid);
            int.TryParse(Convert.ToString(Session["usertypeid"]), out usertypeid);

            if (usertypeid != 1)
            {
                return RedirectToAction("Admin", "DashBoard");
            }

            var List = new List<UserTypeMV>();
            var del_ID = 1;
            var usertypes = DB.tblUserTypes.Where(x => x.Del_ID != del_ID).ToList();
            foreach (var Usertype in usertypes)
            {
                List.Add(new UserTypeMV() { UserTypeID = Usertype.UserTypeID, UserType = Usertype.UserType, Designation = Usertype.Designation,Del_ID=Usertype.Del_ID });
            }

            return View(List);
        }

        public ActionResult CreateUserType()
        {
            if (string.IsNullOrEmpty(Convert.ToString(Session["UserName"])))
            {
                RedirectToAction("Login", "Home");
            }

            var userid = 0;
            var usertypeid = 0;
            int.TryParse(Convert.ToString(Session["UserID"]), out userid);
            int.TryParse(Convert.ToString(Session["usertypeid"]), out usertypeid);

            if (usertypeid != 1)
            {
                return RedirectToAction("Admin", "DashBoard");
            }

            var usertypemv = new UserTypeMV();
            return View(usertypemv);

        }

        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult CreateUserType(UserTypeMV usertypemv)
        {
            if (string.IsNullOrEmpty(Convert.ToString(Session["UserName"])))
            {
                RedirectToAction("Login", "Home");
            }

            var userid = 0;
            var usertypeid = 0;
            int.TryParse(Convert.ToString(Session["UserID"]), out userid);
            int.TryParse(Convert.ToString(Session["usertypeid"]), out usertypeid);
            if (usertypeid != 1)
            {
                return RedirectToAction("Admin", "DashBoard");
            }
            if (ModelState.IsValid)
            {
                var checkusertype = DB.tblUserTypes.Where(u => u.UserType == usertypemv.UserType.Trim()).FirstOrDefault();
                if (checkusertype == null)
                {
                    var newusertype = new tblUserType();
                    newusertype.UserType = usertypemv.UserType;
                    newusertype.Designation = usertypemv.Designation;
                    DB.tblUserTypes.Add(newusertype);
                    DB.SaveChanges();
                    return RedirectToAction("AllUserTypes");

                }
                else
                {
                    ModelState.AddModelError("UserType", "Already Exit!");
                }
            }
            return View(usertypemv);
        }


        public ActionResult EditUserType(int? usertypeid)
        {
            if (string.IsNullOrEmpty(Convert.ToString(Session["UserName"])))
            {
                RedirectToAction("Login", "Home");
            }

            var userid = 0;
            var UserTypeID = 0;
            int.TryParse(Convert.ToString(Session["UserID"]), out userid);
            int.TryParse(Convert.ToString(Session["usertypeid"]), out UserTypeID);

            if (UserTypeID != 1)
            {
                return RedirectToAction("Admin", "DashBoard");
            }

            var editusertype = DB.tblUserTypes.Find(usertypeid);
            var usertypemv = new UserTypeMV();
            usertypemv.UserTypeID = editusertype.UserTypeID;
            usertypemv.UserType = editusertype.UserType;
            usertypemv.Designation = editusertype.Designation;
            return View(usertypemv);
        }


        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult EditUserType(UserTypeMV usertypemv)
        {
            if (string.IsNullOrEmpty(Convert.ToString(Session["UserName"])))
            {
                RedirectToAction("Login", "Home");
            }

            var userid = 0;
            var usertypeid = 0;
            int.TryParse(Convert.ToString(Session["UserID"]), out userid);
            int.TryParse(Convert.ToString(Session["usertypeid"]), out usertypeid);
            if (usertypeid != 1)
            {
                return RedirectToAction("Admin", "DashBoard");
            }
            if (ModelState.IsValid)
            {
                var checkusertype = DB.tblUserTypes.Where(u => u.UserType == usertypemv.UserType.Trim() && u.UserTypeID != usertypemv.UserTypeID).FirstOrDefault();
                if (checkusertype == null)
                {
                    var editusertype = new tblUserType();
                    editusertype.UserType = usertypemv.UserType;
                    editusertype.UserTypeID = usertypemv.UserTypeID;
                    editusertype.Designation = usertypemv.Designation;
                    DB.Entry(editusertype).State = System.Data.Entity.EntityState.Modified;
                    DB.SaveChanges();
                    return RedirectToAction("AllUserTypes");
                }
                else
                {
                    ModelState.AddModelError("UserType", "Already Exit!");
                }
            }
            return View(usertypemv);
        }


        public ActionResult DeleteUserType(int? usertypeid)
        {
            if
                (string.IsNullOrEmpty(Convert.ToString(Session["UserName"])))
            {
                RedirectToAction("Login", "Name");
            }
            var userid = 0;
            var UserTypeID = 0;

            int.TryParse(Convert.ToString(Session["UserID"]), out userid);
            int.TryParse(Convert.ToString(Session["usertypeid"]), out UserTypeID);
            if (UserTypeID != 1)
            {
                return RedirectToAction("Admin", "DashBoard");
            }
            var deleteusertype = DB.tblUserTypes.Find(usertypeid);
            var usertypemv = new UserTypeMV();
            usertypemv.UserTypeID = deleteusertype.UserTypeID;
            usertypemv.UserType = deleteusertype.UserType;
            usertypemv.Designation = deleteusertype.Designation;
            usertypemv.Del_ID = deleteusertype.Del_ID;
            return View(usertypemv);
        }

        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult DeleteUserType(UserTypeMV usertypemv)
        {
            if (string.IsNullOrEmpty(Convert.ToString(Session["UserName"])))
            {
                RedirectToAction("Login", "Home");
            }

            var userid = 0;
            var usertypeid = 0;
            int.TryParse(Convert.ToString(Session["UserID"]), out userid);
            int.TryParse(Convert.ToString(Session["usertypeid"]), out usertypeid);
            if (usertypeid != 1)
            {
                return RedirectToAction("Admin", "DashBoard");
            }

            if (ModelState.IsValid)
            {
                var checkusertype = DB.tblUserTypes.Where(u => u.UserType == usertypemv.UserType.Trim() && u.UserTypeID != usertypemv.UserTypeID).FirstOrDefault();
                if (checkusertype == null)
                {
                    var editusertype = new tblUserType();
                    editusertype.UserType = usertypemv.UserType;
                    editusertype.UserTypeID = usertypemv.UserTypeID;
                    editusertype.Designation = usertypemv.Designation;
                    editusertype.Del_ID = usertypemv.Del_ID;
                    DB.Entry(editusertype).State = System.Data.Entity.EntityState.Modified;
                    DB.SaveChanges();
                    return RedirectToAction("AllUserTypes");
                }
                else
                {
                    ModelState.AddModelError("UserType", "Already Exit!");
                }
                
            }
            return View(usertypemv);
        }

        public ActionResult username()
        {
            var items = DB.V_User.ToList();
            if (items != null)
            {
                ViewBag.data = items;

            }
            return View();
        }
    }
}

i am getting confuse that how to populate dropdown list using above controll and same View(CreateUserType),

i want value in dropdownlist tbl_designation(ID,Designation)