public string Texto()
        {
            var rt = "";

            rt += "Desde: " + Desde.ToShortDateString() + ", Hasta: " + Hasta.ToShortDateString();
            return(rt);
        }
 protected override Dictionary <string, string> GetFilterValues()
 {
     return(new Dictionary <string, string>
     {
         { CultureManager.GetLabel("DESDE"), Desde.ToShortDateString() + " " + Desde.ToShortTimeString() },
         { CultureManager.GetLabel("HASTA"), Hasta.ToShortDateString() + " " + Hasta.ToShortTimeString() }
     });
 }