HasRequired(row => row.CreatedBy).WithMany(row => row.CategoriesCreated).HasForeignKey(row => row.CreatedById).WillCascadeOnDelete(false);
HasOptional(row => row.DeletedBy).WithMany(row => row.CategoriesDeleted).HasForeignKey(row => row.DeletedById).WillCascadeOnDelete(false);

        public MyContext()
        {
            this.Configuration.ProxyCreationEnabled = false;
            this.Configuration.LazyLoadingEnabled = false;
            this.Configuration.AutoDetectChangesEnabled = false;
        }

        public void RegisterRoutes(RouteCollection routes)
        {
            //....  
            routes.Insert(0,
                new Route("NewsArea/Images/{file}.{extension}",
                    new RouteValueDictionary(new { }),
                    new RouteValueDictionary(new { extension = "png|jpg" }),
                    new EmbeddedResourceRouteHandler(assembly, resourcePath, cacheDuration: TimeSpan.FromDays(30))
                ));
        }

<script type="text/javascript">
    $(document).ready(function () {
        $("[rel='tooltip']").tooltip({ placement: 'top', trigger: 'hover' });
    });
</script>

@Ajax.ActionLink(" ", MVC.Admin.ContactUs.ActionNames.List, MVC.Admin.ContactUs.Name,
            new
            {
                bywriter = ViewBag.bywriter,
                bydate = ViewBag.bydate,
                byisread = ViewBag.byisread,
                byisshow = ViewBag.byisshow,
                page = max,
                count = ViewBag.COUNT
            },
                new AjaxOptions
                {
                    HttpMethod = "Post",
                    InsertionMode = InsertionMode.Replace,
                    OnBegin = "showLoading",
                    UpdateTargetId = "listdiv",
                    OnComplete = "hideLoading"
                },
            new { @class = "glyphicon glyphicon-backward nodecoration", @rel = "tooltip", @title = "صفحه آخر" })

$.extend($.jgrid.edit, {
    bSubmit: "Save and Close",
    bCancel: "Cancel",
    width: 370,
    recreateForm: true,
    beforeShowForm: function () {
        $('<a href="#">Save and New<span class="ui-icon ui-icon-disk"></span></a>')
            .click(function() {
                alert("click!");
            }).addClass("fm-button ui-state-default ui-corner-all fm-button-icon-left")
              .prependTo("#Act_Buttons>td.EditButton");
    }
});

$('#dbcat').change(function () {
    var selectedItem = $(this).val();
    $.post( "-----url----", { item: selectedItem } );
});

    public class YahooWeatherRssItem
    {
        public int Code { get; set; } 
        //...
        public string FileName 
        {
          get { return Util.GetFileName(Code); }
        }
    }