/// <summary>
 /// Selects all data from the file
 /// </summary>
 /// <returns></returns>
 public List<EquipmentMaintenance> SelectAllData()
 {
     FileOperations objEquipMaintenanceDB = new FileOperations();
     return GetEquipmentMaintenaceColl(objEquipMaintenanceDB.ReadAll(EquipmentMaintenaceFilePath));
 }