.NET (Core and Framework)

<telerik:GridTemplateColumn DataField="IsHighLevel" HeaderText="High Level">
                                                <ItemTemplate>
                                                    <%# IIf(Convert.ToBoolean(Eval("IsHighLevel")) = True, "Yes", "No")%>
                                                </ItemTemplate>
                                                <EditItemTemplate>
                                                    <asp:RadioButtonList SelectedValue='<%# IIf((Eval("IsHighLevel")) = True, "Yes", "No")%>'
                                                        OnSelectedIndexChanged="chkIsHighLevelIndexChanged" ID="rblIsHighLevel" RepeatDirection="Horizontal"
                                                        runat="server" AutoPostBack="True">
                                                        <asp:ListItem Value="Yes" Text="Yes"></asp:ListItem>
                                                        <asp:ListItem Value="No" Text="No"></asp:ListItem>
                                                    </asp:RadioButtonList>
                                                    <asp:TextBox runat="server" ID="txtHighLevel" Visible="false"></asp:TextBox>
                                                    </ItemTemplate>
                                                </EditItemTemplate>
                                            </telerik:GridTemplateColumn>
<telerik:GridDropDownColumn UniqueName="AccessLevelID" ListDataMember="AccessLevel"
  SortExpression="AccessLevelID" ListTextField="Description" ListValueField="DDL_AccessLevelID"
  HeaderText="AccessLevelID" DataField="GRID_AccessLevelID

Protected Sub chkIsHighLevelIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
        Try

            Dim rblIsHighLevel As RadioButtonList = DirectCast(sender, RadioButtonList)
            If rblIsHighLevel.SelectedValue = "Yes" Then
                '
                ???? access dropdowncolumn to enable
                       End If

The model item passed into the dictionary is of type 'WebTime_Sheet.Models.RegisterViewModel', but this dictionary requires a model item of type 'WebTime_Sheet.Models.Users'.

//
       // GET: /Account/Register
       [AllowAnonymous]
       public ActionResult Register()
       {
           ViewBag.RoleName = new SelectList(db.Roles, "RoleName", "RoleName");
           return View();
       }

       //
       // POST: /Account/Register
       [HttpPost]
       [AllowAnonymous]
       [ValidateAntiForgeryToken]
       public async Task<ActionResult> Register(RegisterViewModel model, DateTime? EmploymentEndDate = null)
       {
           if (ModelState.IsValid)
           {
               var user = new ApplicationUser {
                   UserName = model.Email,
                   Email = model.Email };
               var result = await UserManager.CreateAsync(user, model.Password);
               if (result.Succeeded)
               {
                   using (var context = new TimeSheetsEntities())
                   {
                       var u = new Users
                       {
                           UserId = model.UserId,
                           SocialSecurityNumber = model.SocialSecurityNumber,
                           FirstName = model.FirstName,
                           LastName = model.LastName,
                           Address1 = model.Address1,
                           ZipCode = model.ZipCode,
                           City = model.City,
                           PhoneNumber1 = model.PhoneNumber1,
                           PhoneNumber2 = model.PhoneNumber2,
                           EmploymentStartDate = model.EmploymentStartDate,
                           EmploymentEndDate = model.EmploymentEndDate,
                           Email = model.Email,
                           Password = model.Password,
                           RoleName = model.RoleName,
                       };
                       context.Users.Add(u);
                       context.SaveChanges();
                   }
                   await SignInManager.SignInAsync(user, isPersistent:false, rememberBrowser:false);

                   // For more information on how to enable account confirmation and password reset please visit http://go.microsoft.com/fwlink/?LinkID=320771
                   // Send an email with this link
                   // string code = await UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
                   // var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
                   // await UserManager.SendEmailAsync(user.Id, "Confirm your account", "Please confirm your account by clicking <a href=\"" + callbackUrl + "\">here</a>");

                   return RedirectToAction("Index", "Home");
               }
               AddErrors(result);
           }

           // If we got this far, something failed, redisplay form
           return View(model);
       }

public class RegisterViewModel
{
    [Required]
    [Range(10000 - 99999, Double.MaxValue, ErrorMessage = "Create 5 digit UserId")]
    [Display(Name = "User Identification")]
    public int UserId { get; set; }

    [Required]
    [Display(Name = "Social Security number")]
    public string SocialSecurityNumber { get; set; }

    [Required]
    [Display(Name = "Firstname")]
    public string FirstName { get; set; }

    [Required]
    [Display(Name = "Lastname")]
    public string LastName { get; set; }

    [Required]
    [Display(Name = "Adress Line 1")]
    public string Address1 { get; set; }

    [Required]
    [Display(Name = "Adress Line 2")]
    public string Address2 { get; set; }

    [Required]
    [Display(Name = "Postal code")]
    public string ZipCode { get; set; }

    [Required]
    [Display(Name = "City")]
    public string City { get; set; }

    [Required]
    [Display(Name = "Telephone number")]
    public string PhoneNumber1 { get; set; }
    [Required]
    [Display(Name = "Telephon number")]
    public string PhoneNumber2 { get; set; }

    [Required]
    [Display(Name = "Date of employment")]
    public DateTime EmploymentStartDate { get; set; }

    [Required]
    [Display(Name = "End of Employment")]
    public DateTime? EmploymentEndDate { get; set; }

    [Required]
    [EmailAddress]
    [Display(Name = "Email")]
    public string Email { get; set; }

    [Required]
    [StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)]
    [DataType(DataType.Password)]
    [Display(Name = "Password")]
    public string Password { get; set; }

    [DataType(DataType.Password)]
    [Display(Name = "Confirm password")]
    [Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
    public string ConfirmPassword { get; set; }

    [Required]
    [Display(Name = "Role")]
    public string RoleName { get; set; }