populate a listbox with a hashtable

[Dave]

Hi all,
Is it possible to populate a listbox from a hashtable (complexbind) where
the ValueMember of the listbox maps to the "key" member of the hashtable AND
the DisplayMember of the listbox maps to the "value" member of the
hashtable?
I found that it is impossible to use a hashtable as a listbox datasource
directly (from trial and error) and tried DirectCast-ing to an arraylist
without any success. Before I spend anymore time in vain complex binding, I
thought I'd ask to see if anyone has figured a method of doing so.

D

 

[Zoury]

Hi Dave!

didn't test it but it seems ok
http://groups.google.com/groups?threadm=570701c200d3$6f283280$b1e62ecf@tkmsftngxa04

 

[Dave]

Bummer, this only works in ASP.NET.

Hi Dave!

didn't test it but it seems ok
http://groups.google.com/groups?threadm=570701c200d3$6f283280$b1e62ecf@tkmsftngxa04

 

[Zoury]

oh sorry! i didn't pay much attention to the properties name from the
sample.

have you try this :
'***
Dim ht As Hashtable = New Hashtable(3)
ht.Add("item 1", 1)
ht.Add("item 2", 2)
ht.Add("item 3", 3)

ListBox1.DisplayMember = "key"
ListBox1.ValueMember = "value"

Dim entry As DictionaryEntry
For Each entry In ht
ListBox1.Items.Add(entry)
Next
'***

note that for some reason you must affect DisplayMember and ValueMember
properties before adding the items or the displayed item might not be
correct... (plus i'm not quite sure why it's not the other way around)

 

[Dave]

Thanks Zoury!

I learned something new: looping with the "DictionaryEntry" - This is
awesome and works faster than the datatable binding!
Forgive me for getting so excited over this, I am quite new to VB.Net!