El servidor remoto devolvió un error: (429) Demasiadas solicitudes.

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

  <%@ Page Language="C#" Debug="true" %>

or:

2) Add the following section to the configuration file of your application:

<configuration>
   <system.web>
       <compilation debug="true"/>
   </system.web>
</configuration>

Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.

Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.

[WebException: The remote server returned an error: (429) Too Many Requests.]
   System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request) +2716656
   System.Net.WebClient.DownloadString(Uri address) +207
   DALNoticias.NoticiaById(String id) +128
   Controles_DetalleNoticia_cuerpoNoticia.Page_Load(Object sender, EventArgs e) +5705
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
   System.Web.UI.Control.LoadRecursive() +71
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.BasePartialCachingControl.LoadRecursive() +143
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3048