EnVisageOnline/Main/Source/EnVisage/Code/Attributes/AllowCrossSiteJsonAttribute.cs

using System.Web.Mvc;

namespace EnVisage.Code.Attributes
{
    public class AllowCrossSiteJsonAttribute : ActionFilterAttribute
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            filterContext.RequestContext.HttpContext.Response.AddHeader("Access-Control-Allow-Origin", "*");
            base.OnActionExecuting(filterContext);
        }
    }
}