<#@ output extension=".cs" encoding="utf-8" #>

    <script type="text/javascript">
        alert('test');
    </script>

   public iTextSharp.text.Font GetBNazanin()
        {

            var fontName = "BNazanin";
            var fontPath = Path.Combine(_hostingEnvironment.WebRootPath + @"\css\font\BNazanin\BNazanin.ttf");

            if (!FontFactory.IsRegistered(fontName))// به درستی کار می‌کند و در صورت وجود از کش می‌خواند
            {
                FontFactory.Register(fontPath);
            }

            return FontFactory.GetFont(fontPath, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
        }

  public iTextSharp.text.Font GetIRANSans()
        {
            var fontName = "IRANSansWeb(FaNum)_Medium";
            var fontPath = Path.Combine(_hostingEnvironment.WebRootPath + @"\css\font\IRANSansWeb(FaNum)_Medium.ttf");
          
            if (!FontFactory.IsRegistered(fontName))// always false
            {
                FontFactory.Register(fontPath);
            }
            return FontFactory.GetFont(fontPath, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
        }

using System.IO;
using System.Net.Mime;
using System.Web.Mvc;

namespace MvcWatermark.Controllers
{
    public class HomeController : Controller
    {
        const int ADay = 86400;

        public ActionResult Index()
        {
            return View();
        }

        [OutputCache(VaryByParam = "fileName", Duration = ADay)]
        public ActionResult Image(string fileName)
        {
            fileName = Path.GetFileName(fileName); // تمیز سازی امنیتی است
            var rootPath = Server.MapPath("~/App_Data/Images");
            var path = Path.Combine(rootPath, fileName);
            if (!System.IO.File.Exists(path))
            {
                var notFoundImage = "notFound.png";
                path = Path.Combine(rootPath, notFoundImage);
                return File(path, MediaTypeNames.Image.Gif, notFoundImage);
            }
            return File(path, MediaTypeNames.Image.Gif, fileName);
        }
    }
}

<img src="@Url.Action(actionName: "Image", controllerName: "Home", routeValues: new { fileName = "EF_Stra_08.gif" })" />

        private bool isEmbeddedIntoAnotherDomain
        {
            get
            {
                return this.HttpContext.Request.UrlReferrer != null &&
                       !this.HttpContext.Request.Url.Host.Equals(this.HttpContext.Request.UrlReferrer.Host,
                                                                   StringComparison.InvariantCultureIgnoreCase);
            }
        }

        private byte[] addWaterMark(string filePath, string text)
        {
            var image = new WebImage(filePath);
            image.AddTextWatermark(text);
            return image.GetBytes();
        }

 A Graphics object cannot be created from an image that has an indexed pixel format.

PixelFormatUndefined
PixelFormatDontCare
PixelFormat1bppIndexed
PixelFormat4bppIndexed
PixelFormat8bppIndexed
PixelFormat16bppGrayScale
PixelFormat16bppARGB1555

            if (isEmbeddedIntoAnotherDomain)
            {
                var text = Url.Action(actionName: "Index", controllerName: "Home", routeValues: null, protocol: "http");
                var content = addWaterMark(path, text);
                return File(content, MediaTypeNames.Image.Gif, fileName);
            }
            return File(path, MediaTypeNames.Image.Gif, fileName);