Get error line number using custom error (OnException) handler in ASP.Net MVC

Hello friends,

I throw an exception to this onexception method but can't get line number of the exception. I tried below code but it return line number as 0.

Please help

public class CustomErrorHandlerAttribute : HandleErrorAttribute
{
    public override void OnException(ExceptionContext filterContext)
    {
        var controllerName = filterContext.RouteData.Values["controller"];
        var actionName = filterContext.RouteData.Values["action"];
        var st = new System.Diagnostics.StackTrace(filterContext.Exception, true);
        var frame = st.GetFrame(st.FrameCount - 1);
        var linenumber = frame.GetFileLineNumber(); // returns only 0 its wrong error line num is 72
    }
}