Resizing an arraylist

[cmdolcet69]

I have an arraylist of for example 1200. I want to re organize the
array so that position 1 on the arraylist if actaully now position 3
and i want to add 3 position before position 3 and at the end of the
arraylist. Can i use the Redim statement?

[Armin Zingler]

"cmdolcet69" <co************@hotmail.comschrieb

I have an arraylist of for example 1200. I want to re organize the
array so that position 1 on the arraylist if actaully now position 3
and i want to add 3 position before position 3 and at the end of the
arraylist. Can i use the Redim statement?

The benefit in using an Arraylist is that you do _not_ have to (and
can't) ReDim anything. Use the Add/Insert/Remove/RemoveAt methods to
add/remove items. In VB 2005 and above, there are several additional
Generic lists, like List(Of T).
Armin

[cmdolcet69]

On May 5, 10:16*am, "Armin Zingler" <[e-mail]:

"cmdolcet69" <[e-mail]

I have an arraylist of for example 1200. I want to re organize the
array so that position 1 on the arraylist if actaully now position 3
and i want to add 3 position before position 3 and at the end of the
arraylist. Can i use the Redim statement?

The benefit in using an Arraylist is that you do _not_ have to (and
can't) ReDim anything. Use the Add/Insert/Remove/RemoveAt methods to
add/remove items. In VB 2005 and above, there are several additional
Generic lists, like List(Of T).

Armin

How can i add in 3 position at the start???

[Herfried K. Wagner [MVP]]

"cmdolcet69" <co************@hotmail.comschrieb:

I have an arraylist of for example 1200. I want to re organize the
array so that position 1 on the arraylist if actaully now position 3
and i want to add 3 position before position 3 and at the end of the
arraylist. Can i use the Redim statement?

The benefit in using an Arraylist is that you do _not_ have to (and
can't) ReDim anything. Use the Add/Insert/Remove/RemoveAt methods to
add/remove items. In VB 2005 and above, there are several additional
Generic lists, like List(Of T).

How can i add in 3 position at the start???

Take a look at 'ArrayList.Insert'.

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

[Armin Zingler]

"cmdolcet69" <co************@hotmail.comschrieb

On May 5, 10:16 am, "Armin Zingler" <[e-mail]:

"cmdolcet69" <[e-mail]

I have an arraylist of for example 1200. I want to re organize
the array so that position 1 on the arraylist if actaully now
position 3 and i want to add 3 position before position 3 and at
the end of the arraylist. Can i use the Redim statement?

The benefit in using an Arraylist is that you do _not_ have to
(and can't) ReDim anything. Use the Add/Insert/Remove/RemoveAt
methods to add/remove items. In VB 2005 and above, there are
several additional Generic lists, like List(Of T).

Armin

How can i add in 3 position at the start???

Probably you are looking for the Insert method that I have mentioned
before.
Armin

[=?Utf-8?B?U3VydHVyWg==?=]

I think this is what you are after:

Module Module1
Sub Main()
Dim arl As New ArrayList
'initialise
arl.Add(0)
arl.Add(1)
arl.Add(2)
arl.Add(3)
arl.Add(4)
arl.Add(5)
'move first two elements to the end
arl.Add(arl(0))
arl.RemoveAt(0)
arl.Add(arl(0))
arl.RemoveAt(0)

For Each o As Object In arl
Console.Write(o.ToString & " ")
Next
Console.ReadKey()

End Sub

End Module
--
David Streeter
Synchrotech Software
Sydney Australia