<div condition="Model.Approved"> 
    <p> 
        This website has <strong surround="em">@Model.Approved</strong> been approved yet. 
        Visit www.contoso.com for more information. 
    </p> 
</div> 

<div condition="!User.Identity.IsAuthenticated">I'm not a valid user</div> 
<div condition="User.Identity.IsAuthenticated">I can use the system</div>

[Required(ErrorMessageResourceType = typeof(ValidationErrorsResource),
            ErrorMessageResourceName = ResourceKeys.ValidationErrorsResource.RequiredField)]
        [MaxLength]
        [DisplayName("متن")]
        [AllowHtml]
        public string FullDescription { get; set; }

<div>متن: </div>
                <div>@Html.TextAreaFor(p => p.FullDescription)</div>
                <div>@Html.ValidationMessageFor(p => p.FullDescription)</div>

$('#FullDescription').redactor({
            autoformat: false,
            convertDivs: false
        });