// constractor
 public GuestRequest(My_enum.Status my_status     = 0, DateTime my_RegistrationDate      = new DateTime(),
                     string my_PrivateName        = " ", string my_FamilyName            = " ",
                     string my_MailAddress        = " ", string my_FhoneNumber           = " ", DateTime my_EntryDate = new DateTime(),
                     DateTime my_ReleaseDate      = new DateTime(), My_enum.Area my_Area = 0, string my_SubArea       = " ",
                     My_enum.Type my_Type         = 0, int my_Adults = 0, int my_Children = 0, My_enum.Yes_Or_No my_Pool = 0,
                     My_enum.Yes_Or_No my_Jacuzzi = 0, My_enum.Yes_Or_No my_Garden = 0,
                     My_enum.Yes_Or_No my_ChildrensAttractions = 0)
 {
     Status               = my_status;
     RegistrationDate     = my_RegistrationDate;
     firstName            = my_PrivateName;
     FamilyName           = my_FamilyName;
     MailAddress          = my_MailAddress;
     FhoneNumber          = my_FhoneNumber;
     EntryDate            = my_EntryDate;
     ReleaseDate          = my_ReleaseDate;
     Area                 = my_Area;
     SubArea              = my_SubArea;
     Type                 = my_Type;
     Adults               = my_Adults;
     Children             = my_Children;
     Pool                 = my_Pool;
     Jacuzzi              = my_Jacuzzi;
     Garden               = my_Garden;
     ChildrensAttractions = my_ChildrensAttractions;
 }
 //constractor:
 public HostingUnit(MyHost My_Owner, bool[,] My_Diary, string my_HostingUnitName = " ",
                    My_enum.Type my_Type      = 0, int My_Adults = 0, int my_Children = 0, My_enum.Area my_Area = 0,
                    string my_SubArea         = " ", My_enum.Yes_Or_No my_ChildrensAttractions = 0, My_enum.Yes_Or_No my_Garden = 0,
                    My_enum.Yes_Or_No my_Pool = 0, My_enum.Yes_Or_No my_Jacuzzi                = 0)
 {
     Owner                = My_Owner;
     Diary                = My_Diary;
     HostingUnitName      = my_HostingUnitName;
     Type                 = my_Type;
     Adults               = My_Adults;
     Children             = my_Children;
     Area                 = my_Area;
     SubArea              = my_SubArea;
     ChildrensAttractions = my_ChildrensAttractions;
     Garden               = my_Garden;
     Pool                 = my_Pool;
     Jacuzzi              = my_Jacuzzi;
 }