How to get values from session objects?

[MrNorth]

I ahve a collection object saved in the session
I have also declared a new collection object

When I do the following(written from memory )

dim newcoll as new collection
newcoll = Cast(Session("Collection"), Collection)


I get only a reference to the session collection.. so when I am editing newcoll I am manipulating the sessions collection...
How can I get the value?

kind regarrds
Henrik

[nswan]

isn't this ASP.NET?

when i store a dataset as a session object I don't cast it when getting the value back and it seems to work ok.

[MrNorth]

yes it's asp.net...

The problem we are having is that when we perform the cast, a reference to the object in session. SO when we alter the values in the collection... the session collection is altered... not what we wanted.

I know byref is default in .net...


kinds regards
Henrik

[Edneeis]

If you don't want to alter the session collection then why are you using it? I'm confused.

dim newcoll as new collection
'this assigns the collection object created in the last line to
'the session collection instead of the one created
'in fact using New here does nothing since you assign it
'to another collection in the next line
newcoll = DirectCast(Session("Collection"), Collection)

Are you trying to work with a copy of the collection? If so then you'll need to write a routine that actually copies the properties of the items to new items and adds them to the new collection. This all happens because the collection object is a reference type not a value type.

[MrNorth]

Actually Im asking for a friend.. he asked me and I didn't have a perfect answer to him, so I decided to ask the pros here... I was 99 % sure it was a reference issue but needed to be sure... thanks for the answer.. I have no clue why he want to do it like this

kind regards
Henrik