.Net equivalent of Scripting.Dictionary

[Oenone]

Could someone suggest a good native .Net collection object that provides
similar functionality to the COM Scripting.Dicti onary object?

Specifically I need to be able to add items with an associated key, retrieve
them by key or by index within the collection, and determine whether an item
exists in the collection by querying with its key.

The HashTable was looking good as it does virtually all of these things, but
it doesn't seem to be possible to retrieve its items by index, which is
something I need to be able to do.

Any suggestions?

--

(O)enone

[Larry Lard]

Re: .Net equivalent of Scripting.Dicti onary



Oenone wrote:[color=blue]
> Could someone suggest a good native .Net collection object that provides
> similar functionality to the COM Scripting.Dicti onary object?
>
> Specifically I need to be able to add items with an associated key, retrieve
> them by key or by index within the collection, and determine whether an item
> exists in the collection by querying with its key.
>
> The HashTable was looking good as it does virtually all of these things, but
> it doesn't seem to be possible to retrieve its items by index, which is
> something I need to be able to do.[/color]

I don't remember Dictionary being able to recover items by Index, but
anyway.

Have you looked at SortedList?

--
Larry Lard
Replies to group please

[Robin Tucker]

Re: .Net equivalent of Scripting.Dicti onary

I would derive from dictionarybase and encapsulate an arraylist inside the
class. Sure, it would be more work, but in my experience these things are
pretty fast anyway.

"Oenone" <oenone@nowhere .com> wrote in message
news:%23lxkTVRb FHA.3488@tk2msf tngp13.phx.gbl. ..[color=blue]
> Could someone suggest a good native .Net collection object that provides
> similar functionality to the COM Scripting.Dicti onary object?
>
> Specifically I need to be able to add items with an associated key,
> retrieve them by key or by index within the collection, and determine
> whether an item exists in the collection by querying with its key.
>
> The HashTable was looking good as it does virtually all of these things,
> but it doesn't seem to be possible to retrieve its items by index, which
> is something I need to be able to do.
>
> Any suggestions?
>
> --
>
> (O)enone
>[/color]

[Jon]

Re: .Net equivalent of Scripting.Dicti onary

Why not just use Scripting.Dicti onary? ;)

Jon

"Oenone" <oenone@nowhere .com> wrote in message
news:%23lxkTVRb FHA.3488@tk2msf tngp13.phx.gbl. ..[color=blue]
> Could someone suggest a good native .Net collection object that provides
> similar functionality to the COM Scripting.Dicti onary object?
>
> Specifically I need to be able to add items with an associated key,
> retrieve them by key or by index within the collection, and determine
> whether an item exists in the collection by querying with its key.
>
> The HashTable was looking good as it does virtually all of these things,
> but it doesn't seem to be possible to retrieve its items by index, which
> is something I need to be able to do.
>
> Any suggestions?
>
> --
>
> (O)enone
>[/color]

[Jonathan Allen]

Re: .Net equivalent of Scripting.Dicti onary

Would you have to create COM wrappers for all the classes you intended to
put into the dictionary?

--
Jonathan Allen


"Jon" <Email_Address@ SomewhereOrOthe r.com> wrote in message
news:OmZt5%23Rb FHA.3932@TK2MSF TNGP12.phx.gbl. ..[color=blue]
> Why not just use Scripting.Dicti onary? ;)
>
> Jon
>
> "Oenone" <oenone@nowhere .com> wrote in message
> news:%23lxkTVRb FHA.3488@tk2msf tngp13.phx.gbl. ..[color=green]
>> Could someone suggest a good native .Net collection object that provides
>> similar functionality to the COM Scripting.Dicti onary object?
>>
>> Specifically I need to be able to add items with an associated key,
>> retrieve them by key or by index within the collection, and determine
>> whether an item exists in the collection by querying with its key.
>>
>> The HashTable was looking good as it does virtually all of these things,
>> but it doesn't seem to be possible to retrieve its items by index, which
>> is something I need to be able to do.
>>
>> Any suggestions?
>>
>> --
>>
>> (O)enone
>>[/color]
>
>[/color]

[Jon]

Re: .Net equivalent of Scripting.Dicti onary

Something like

'Reference added to scrrun.dll via Add Reference

Dim dict As New Scripting.Dicti onary

Dim frm As New Form1



'Add data

dict.Add("1", CObj(frm))



'Retrieve data

Dim a As Form1

a = CType(dict.Item ("1"), Form1)

a.ShowDialog()



'Key Exists?

Dim b As Boolean

b = dict.Exists("1" )

MsgBox(b)



Jon





"Jonathan Allen" <x@x.x> wrote in message
news:#R9K1PTbFH A.3144@TK2MSFTN GP14.phx.gbl...[color=blue]
> Would you have to create COM wrappers for all the classes you intended to
> put into the dictionary?
>
> --
> Jonathan Allen
>
>
> "Jon" <Email_Address@ SomewhereOrOthe r.com> wrote in message
> news:OmZt5%23Rb FHA.3932@TK2MSF TNGP12.phx.gbl. ..[color=green]
> > Why not just use Scripting.Dicti onary? ;)
> >
> > Jon
> >
> > "Oenone" <oenone@nowhere .com> wrote in message
> > news:%23lxkTVRb FHA.3488@tk2msf tngp13.phx.gbl. ..[color=darkred]
> >> Could someone suggest a good native .Net collection object that[/color][/color][/color]
provides[color=blue][color=green][color=darkred]
> >> similar functionality to the COM Scripting.Dicti onary object?
> >>
> >> Specifically I need to be able to add items with an associated key,
> >> retrieve them by key or by index within the collection, and determine
> >> whether an item exists in the collection by querying with its key.
> >>
> >> The HashTable was looking good as it does virtually all of these[/color][/color][/color]
things,[color=blue][color=green][color=darkred]
> >> but it doesn't seem to be possible to retrieve its items by index,[/color][/color][/color]
which[color=blue][color=green][color=darkred]
> >> is something I need to be able to do.
> >>
> >> Any suggestions?
> >>
> >> --
> >>
> >> (O)enone
> >>[/color]
> >
> >[/color]
>
>[/color]

[Oenone]

Re: .Net equivalent of Scripting.Dicti onary

Thanks for all the suggestions.

I eventually plumped for the
System.Collecti ons.Specialized .StringDictiona ry. Accessing the objects by
index isn't quite as easy as it might be (I have to use the Keys.CopyTo()
method to copy all the keys to an array, and then can access the keys by
index) but it pretty much does what I need.

--

(O)enone