sort order when iterating a hashtable

[Dahab]

Hi,
Anyone know if its possible to iterate through a hashtable in the same order
that the table was populated?
Im currently using an enumerator to iterate, but the order is quit different
from when the items where inserted into the hashtable.

Thanks
D.

[Marc Gravell]

This is expected. Hash-tables do not guarantee to respect insertion
order. If you need this ability, consider maintaining a separate flat
list / array for this purpose.

Marc

[Dave Sexton]

Hi,

You may also want to consider SortedList<T, Kif your results are sorted to
begin with.

--
Dave Sexton

"Marc Gravell" <ma**********@gmail.comwrote in message
news:eg**************@TK2MSFTNGP02.phx.gbl...

This is expected. Hash-tables do not guarantee to respect insertion order.
If you need this ability, consider maintaining a separate flat list /
array for this purpose.

Marc

[Brian Gideon]

Dahab,

That's not possible because of the way hash tables work. What you want
is a dictionary that preserves temporal ordering similar to how the VB
Collection object works. There's no suitable collection in the BCL
(that I know), but you can find one in the Microsoft.VisualBasic.dll
assembly. Also, there is an implementation at the following link.
It's super easy to implement.

http://www.codeproject.com/csharp/KeyedList.asp

Brian

Dahab wrote:

Hi,
Anyone know if its possible to iterate through a hashtable in the same order
that the table was populated?
Im currently using an enumerator to iterate, but the order is quit different
from when the items where inserted into the hashtable.

Thanks
D.

[Brian Gideon]

Brian Gideon wrote:

There's no suitable collection in the BCL (that I know)

Err...well, there is the KeyedCollection abstract class that was added
in 2.0.