using System.IO;
using System.Web.Mvc;

//use En2FaViewResult as return type for actions 
//Examlpe :
//public En2FaViewResult Index() { 
//  ...
//  return View();
//}
public class En2FaViewResult : ViewResult
{
    private readonly object model;

    public En2FaViewResult()
    {
    }

    public En2FaViewResult(object model)
    {
        this.model = model;
    }

    public override void ExecuteResult(ControllerContext context)
    {
        if (string.IsNullOrWhiteSpace(ViewName))
        {
            ViewName = context.RouteData.Values["action"].ToString();
        }
        ViewEngineResult result = FindView(context);

        context.Controller.ViewData.Model = model;
        ViewDataDictionary viewData = context.Controller.ViewData;
        TempDataDictionary tempData = context.Controller.TempData;

        var writer = new StringWriter();
        ViewContext viewContext = new ViewContext(context, result.View, viewData, tempData, writer);
        result.View.Render(viewContext, writer);

        var html = writer.ToString();
        html = En2Fa(html);

        context.HttpContext.Response.Write(html);
    }

    public string En2Fa(string str)
    {
        return str.Replace("0", "۰")
                  .Replace("1", "۱")
                  .Replace("2", "۲")
                  .Replace("3", "۳")
                  .Replace("4", "۴")
                  .Replace("5", "۵")
                  .Replace("6", "۶")
                  .Replace("7", "۷")
                  .Replace("8", "۸")
                  .Replace("9", "۹");
    }
}