How to use ListBox

[Boni]

Dear all,
I have a very simple question.
I have a listbox with datasource, where DataSource is an arraylist.
I.e. MyListbox.DataSource=MyDataSource.

Now I add/remove something to DataSource, i.e.
MyDataSource.Add("XXX")/MyDatasource.Remove("YYY")
I would expect that this XXX is shown in a Listbox/YYY deleted from a
listbox, but it is not the case.
How do force a ListBox to reread DataSource
Thanks ,
Boni

[Earl]

Set the listbox datasource to Nothing and re-attach.

"Boni" <oilia@nospam> wrote in message
news:%2****************@TK2MSFTNGP14.phx.gbl...

Dear all,
I have a very simple question.
I have a listbox with datasource, where DataSource is an arraylist.
I.e. MyListbox.DataSource=MyDataSource.

Now I add/remove something to DataSource, i.e.
MyDataSource.Add("XXX")/MyDatasource.Remove("YYY")
I would expect that this XXX is shown in a Listbox/YYY deleted from a
listbox, but it is not the case.
How do force a ListBox to reread DataSource
Thanks ,
Boni

[Herfried K. Wagner [MVP]]

"Boni" <oilia@nospam> schrieb:

How do force a ListBox to reread DataSource

\\\
Private m_Data As New ArrayList

Private Sub Form1_Load( _
ByVal sender As Object, _
ByVal e As EventArgs _
) Handles MyBase.Load
m_Data.Add("Hello")
Me.ListBox1.DataSource = m_Data
End Sub

Private Sub Button1_Click( _
ByVal sender As Object, _
ByVal e As EventArgs _
) Handles Button1.Click
m_Data.Add("Bla")
DirectCast( _
Me.ListBox1.BindingContext(Me.ListBox1.DataSource) , _
CurrencyManager _
).Refresh()
End Sub
///

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

[Boni]

Dear Herfried,
What is CurrencyManager ? Is it arraylist?I can'find any refresh member in
listbox

DirectCast( _
Me.ListBox1.BindingContext(Me.ListBox1.DataSource) , _
CurrencyManager _
).Refresh()
--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

[Herfried K. Wagner [MVP]]

"Boni" <oilia@nospam> schrieb:

What is CurrencyManager ? Is it arraylist?I can'find any refresh member in
listbox

DirectCast( _
Me.ListBox1.BindingContext(Me.ListBox1.DataSource) , _
CurrencyManager _
).Refresh()

'CurrencyManager' is a class which is part of the .NET Framework.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>