Hi!
I have a class Bank and a Class BankAccount. A Bank can contains multiple
BankAccounts (logical, isn't it?). The central Bank object contains a
datatable which holds the data of all bankaccounts.
This means, the class BankAccount must have access rights to the datatable
in Bank, but I don't want to expose the datatable as a public property.
Since C# does not support friend classes, what is the best solutuion for
this problem?
--
cody
[Freeware, Games and Humor] www.deutronium.de.vu || www.deutronium.tk 8  1273 
"codymanix" <do************ *********@gmx.d e> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. .. Hi!
I have a class Bank and a Class BankAccount. A Bank can contains multiple
BankAccounts (logical, isn't it?). The central Bank object contains a
datatable which holds the data of all bankaccounts.
This means, the class BankAccount must have access rights to the datatable
in Bank, but I don't want to expose the datatable as a public property.
Since C# does not support friend classes, what is the best solutuion for
this problem?
Personally, instead of having Bank hold all data for accounts, I'd break the
data down and store it in each BankAccount class. However, to answer your
question as posed I'd just pass the data reference into the account at
construction. Is it one row per account? If so then just pass the
appropriate row into the constructor. If its multiple rows pass in a
DataView.
--
cody
[Freeware, Games and Humor]
www.deutronium.de.vu || www.deutronium.tk
"codymanix" <do************ *********@gmx.d e> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. .. Hi!
I have a class Bank and a Class BankAccount. A Bank can contains multiple
BankAccounts (logical, isn't it?). The central Bank object contains a
datatable which holds the data of all bankaccounts.
This means, the class BankAccount must have access rights to the datatable
in Bank, but I don't want to expose the datatable as a public property.
Since C# does not support friend classes, what is the best solutuion for
this problem?
Yeah.
They are just called "internal" isntead of friend. Ok, not exactly the same,
but VERY close.
--
Regards
Thomas Tomiczek
THONA Software & Consulting Ltd.
(Microsoft MVP C#/.NET)
(CTO PowerNodes Ltd.)
---
Still waiting for ObjectSpaces? Try the EntityBroker today - more versatile,
more powerfull.
And something in use NOW. for the projects you have to deliver - NOW.
> > I have a class Bank and a Class BankAccount. A Bank can contains
multiple BankAccounts (logical, isn't it?). The central Bank object contains a
datatable which holds the data of all bankaccounts.
This means, the class BankAccount must have access rights to the
datatable in Bank, but I don't want to expose the datatable as a public property.
Since C# does not support friend classes, what is the best solutuion for
this problem?
Yeah.
They are just called "internal" isntead of friend. Ok, not exactly the
same, but VERY close.
When my application is only one Assembly (which in it is in most cases),
then declaring something internal is the same as making it public.
--
cody
[Freeware, Games and Humor] www.deutronium.de.vu || www.deutronium.tk
> > I have a class Bank and a Class BankAccount. A Bank can contains
multiple BankAccounts (logical, isn't it?). The central Bank object contains a
datatable which holds the data of all bankaccounts.
This means, the class BankAccount must have access rights to the
datatable in Bank, but I don't want to expose the datatable as a public property.
Since C# does not support friend classes, what is the best solutuion for
this problem?
Personally, instead of having Bank hold all data for accounts, I'd break
the data down and store it in each BankAccount class. However, to answer your
question as posed I'd just pass the data reference into the account at
construction. Is it one row per account? If so then just pass the
appropriate row into the constructor. If its multiple rows pass in a
DataView.
This seems the best Idea to me. But the constructor of the BankAccount is
still public.
Ideally it would only be visible to the Bank itself. Do you think putting
the BankAccount
class into the Bank as a local class would solve that problem?
--
cody
[Freeware, Games and Humor] www.deutronium.de.vu || www.deutronium.tk
"Thomas Tomiczek [MVP]" <t.********@tho na-consulting.com> wrote in message
news:OO******** ******@tk2msftn gp13.phx.gbl... "codymanix" <do************ *********@gmx.d e> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. .. Hi!
I have a class Bank and a Class BankAccount. A Bank can contains
multiple BankAccounts (logical, isn't it?). The central Bank object contains a
datatable which holds the data of all bankaccounts.
This means, the class BankAccount must have access rights to the
datatable in Bank, but I don't want to expose the datatable as a public property.
Since C# does not support friend classes, what is the best solutuion for
this problem?
Yeah.
They are just called "internal" isntead of friend. Ok, not exactly the
same, but VERY close.
Internal restricts access to the classes in an assembly. An assembly usually
contains many classes. Friend, at least as defined in C++, restricts access
to a single class, a single member of that class, or a single non
member.
/Magnus Lidbom
"codymanix" <do************ *********@gmx.d e> wrote in message
news:OE******** ******@TK2MSFTN GP09.phx.gbl... I have a class Bank and a Class BankAccount. A Bank can contains multiple BankAccounts (logical, isn't it?). The central Bank object contains a
datatable which holds the data of all bankaccounts.
This means, the class BankAccount must have access rights to the datatable in Bank, but I don't want to expose the datatable as a public
property.
Since C# does not support friend classes, what is the best solutuion
for this problem?
Personally, instead of having Bank hold all data for accounts, I'd break
the data down and store it in each BankAccount class. However, to answer
your question as posed I'd just pass the data reference into the account at
construction. Is it one row per account? If so then just pass the
appropriate row into the constructor. If its multiple rows pass in a
DataView.
This seems the best Idea to me. But the constructor of the BankAccount is
still public.
Ideally it would only be visible to the Bank itself. Do you think putting
the BankAccount
class into the Bank as a local class would solve that problem?
A contained class would work. Its a bit harder to work with(The type name is
Namespace.Bank. BankAccount now) but it should be sufficent. Just use a
private constructor(tha t is, unless my head is fooling with me today). --
cody
[Freeware, Games and Humor]
www.deutronium.de.vu || www.deutronium.tk
> > > > I have a class Bank and a Class BankAccount. A Bank can contains multiple > BankAccounts (logical, isn't it?). The central Bank object contains
a > datatable which holds the data of all bankaccounts.
>
> This means, the class BankAccount must have access rights to the datatable > in Bank, but I don't want to expose the datatable as a public property. >
> Since C# does not support friend classes, what is the best solutuion for > this problem?
>
Personally, instead of having Bank hold all data for accounts, I'd
break the data down and store it in each BankAccount class. However, to answer your question as posed I'd just pass the data reference into the account at
construction. Is it one row per account? If so then just pass the
appropriate row into the constructor. If its multiple rows pass in a
DataView.
This seems the best Idea to me. But the constructor of the BankAccount
is still public.
Ideally it would only be visible to the Bank itself. Do you think
putting the BankAccount
class into the Bank as a local class would solve that problem?
A contained class would work. Its a bit harder to work with(The type name
is Namespace.Bank. BankAccount now) but it should be sufficent. Just use a
private constructor(tha t is, unless my head is fooling with me today).
If the ctor would be private, nobody but the BankAccount itself can
instantiate a BankAccount.
--
cody
[Freeware, Games and Humor] www.deutronium.de.vu || www.deutronium.tk
"cody" <do************ *********@gmx.d e> wrote in message
news:bv******** ****@ID-176797.news.uni-berlin.de... > > I have a class Bank and a Class BankAccount. A Bank can contains
multiple
> > BankAccounts (logical, isn't it?). The central Bank object
contains a > > datatable which holds the data of all bankaccounts.
> >
> > This means, the class BankAccount must have access rights to the
datatable
> > in Bank, but I don't want to expose the datatable as a public property. > >
> > Since C# does not support friend classes, what is the best
solutuion for > > this problem?
> >
>
> Personally, instead of having Bank hold all data for accounts, I'd
break the
> data down and store it in each BankAccount class. However, to answer
your > question as posed I'd just pass the data reference into the account
at > construction. Is it one row per account? If so then just pass the
> appropriate row into the constructor. If its multiple rows pass in a
> DataView.
This seems the best Idea to me. But the constructor of the BankAccount
is still public.
Ideally it would only be visible to the Bank itself. Do you think putting the BankAccount
class into the Bank as a local class would solve that problem?
A contained class would work. Its a bit harder to work with(The type
name is Namespace.Bank. BankAccount now) but it should be sufficent. Just use a
private constructor(tha t is, unless my head is fooling with me today).
If the ctor would be private, nobody but the BankAccount itself can
instantiate a BankAccount.
Ya, I had scoping rules turned upside down, thats what happens when you try
to respond to stuff too early, ;).
In your case, you are simply going to have to be responsible with internal.
--
cody
[Freeware, Games and Humor]
www.deutronium.de.vu || www.deutronium.tk
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