private DataTable getDataTable()
 {
     Consulta c = new Consulta();
     DataTable objDtDatos = null;
     try
     {
         objDtDatos = c.consultarExtensiones();
     }
     catch (Exception ex)
     {
         Logger.generarLogError(ex.Message, new System.Diagnostics.StackFrame(true), ex);
         this.RadWindowManager1.RadAlert(Utilities.errorMessage(), 400, 200, Utilities.windowTitle(TypeMessage.error_message),
             null, Utilities.pathImageMessage(TypeMessage.error_message));
     }
     return objDtDatos;
 }