--- a/Agendas/trunk/src/Agendas.Web/DataProviders.cs	Sun Sep 25 01:40:18 2011 -0300
+++ b/Agendas/trunk/src/Agendas.Web/DataProviders.cs	Mon Sep 26 08:47:01 2011 -0300
@@ -25,6 +25,27 @@
                        new SelectListItem {Text = p.Nombre, Value = p.Id.ToString(), Selected = p.Id.Equals(id)};
         }
 
+		public static IEnumerable<SelectListItem> GetOtrosPonentes(this HtmlHelper helper, IEnumerable<Guid> ids)
+		{
+			var personas = AgendaFactory.GetPersonaService();
+			if (ids == null || !ids.Any()) return new SelectListItem[] {};
+
+			return from p in from id in ids
+				   select personas.GetById(id)
+				   select new SelectListItem { Text = p.Nombre, Value = p.Id.ToString() };
+		}
+
+
+		public static IEnumerable<SelectListItem> GetOtrosPonentesExcepto(this HtmlHelper helper, IEnumerable<Guid> ids)
+		{
+			var personas = AgendaFactory.GetPersonaService();
+
+			if (ids==null) ids = new List<Guid>();
+
+			return from p in personas.GetAll() where !ids.Contains(p.Id)
+				   select new SelectListItem { Text = p.Nombre, Value = p.Id.ToString() };
+		}
+		
 		public static IEnumerable<string> GetRoles(this HtmlHelper helper)
 		{
 			return new[] {Roles.Administrador, Roles.Usuario};