sys.sp_db_selective_xml_index @dbname = 'dbname', @selective_xml_index = 'action: on|off|true|false'

 for(
 pathColor = '/Item/Product/Color' as SQL nvarchar(20),
 pathSize = '/Item/Product/Size' as SQL int
)  

@using (Ajax.BeginForm(actionName: "Index",
                       controllerName: "Home",
                       ajaxOptions: new AjaxOptions
                       {
                           HttpMethod = "POST",
                           OnSuccess = "doUpload(data, status, xhr)"
                       },
                       routeValues: null,
                       htmlAttributes: new { id = "uploadForm" }))
{

        function doUpload(data, status, xhr) {
            alert(data.result);
            // مابقی کدهای آپلود فایل

• OnBegin – xhr
• OnComplete – xhr, status
• OnSuccess – data, status, xhr
• OnFailure – xhr, status, error

    [AttributeUsage(AttributeTargets.Method, AllowMultiple = false)]
    public sealed class ValidateCaptchaAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            var controllerBase = filterContext.Controller;

            var captchaInputTextProvider = controllerBase.ValueProvider.GetValue("CaptchaInputText");
            if (captchaInputTextProvider == null)
            {
                controllerBase.ViewData.ModelState.AddModelError("CaptchaInputText", "لطفا تصویر امنیتی را وارد کنید");
                base.OnActionExecuting(filterContext);
                return;
            }
            var inputText = captchaInputTextProvider.AttemptedValue;

            if (inputText != Session["captchastring"].ToString())
               controllerBase.ViewData.ModelState.AddModelError("CaptchaInputText", "تصویر امنیتی را اشتباه وارد کرده اید");
         } 
     }

foreach (var dept in db.Departments)
{
     Console.WriteLine(dept.Name);
      foreach (var item in dept.Employees)
      {
           Console.WriteLine(item.FirstName);
       }
}