public List<uspEmpresa_ListarXRazonSocialXRucResult> Empresa_ListarXRazonSocialXRUC(String RazonSocial, String RUC)
 {
     SSIA2013DataContext dc = null;
     try
     {
         dc = new SSIA2013DataContext(ConfigurationManager.ConnectionStrings["SSIA2013"].ToString());
         List<uspEmpresa_ListarXRazonSocialXRucResult> lst = dc.uspEmpresa_ListarXRazonSocialXRuc(RazonSocial, RUC).ToList();
         return lst;
     }
     catch (Exception ex)
     {
         throw ex;
     }
     finally
     {
         if (dc != null)
         {
             dc.Dispose();
         }
     }
 }