473,388 Members | 1,224 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,388 software developers and data experts.

Remove items from listbox

I use the following example (from another post) and it seemed to work fine.
However, when I add the syntax to remove the selected item from the
senderbox, I got error.
senderBox.Items.RemoveAt(senderbox.selectedIndex)

I was told that I need to copy selecteditems to an array and run the For
each routine from the array instead. Can someone please give me some idea
on how to accomplish this?
Thanks a million.

Bill
Private Sub lb1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles lb1.SelectedIndexChanged

Dim o As Object

Dim senderBox As ListBox

senderBox = DirectCast(sender, ListBox)

lb2.Items.Clear()

For Each o In senderBox.SelectedItems

lb2.Items.Add(o)

' to remove from senderBox

senderBox.Items.RemoveAt(senderbox.selectedIndex)
Next

End Sub
Nov 21 '05 #1
3 6026

"Bill Nguyen" <bi*****************@jaco.com> wrote in message
news:uv**************@TK2MSFTNGP14.phx.gbl...
I use the following example (from another post) and it seemed to work fine.
However, when I add the syntax to remove the selected item from the
senderbox, I got error.
senderBox.Items.RemoveAt(senderbox.selectedIndex)

I was told that I need to copy selecteditems to an array and run the For
each routine from the array instead. Can someone please give me some idea
on how to accomplish this?
Thanks a million.

Bill
Private Sub lb1_SelectedIndexChanged(ByVal sender As System.Object, ByVal
e
As System.EventArgs) Handles lb1.SelectedIndexChanged

Dim o As Object

Dim senderBox As ListBox

senderBox = DirectCast(sender, ListBox)

lb2.Items.Clear()

For Each o In senderBox.SelectedItems

lb2.Items.Add(o)

' to remove from senderBox

senderBox.Items.RemoveAt(senderbox.selectedIndex)
Next

End Sub

Have you used the debugger to step through your code in the event procedure?
Take note of the value of selectedIndex the second time through your loop.
As the item related to the selected index has been removed, my test
indicates the value of SelectedIndex is now -1, which throws the
System.ArgumentOutOfRangeException.
I'd recommend you look at the ArrayList class instead of using an array.

--
Peter [MVP Visual Developer]
Jack of all trades, master of none.
Nov 21 '05 #2
What was the error ?

rawCoder

"Bill Nguyen" <bi*****************@jaco.com> wrote in message
news:uv**************@TK2MSFTNGP14.phx.gbl...
I use the following example (from another post) and it seemed to work fine. However, when I add the syntax to remove the selected item from the
senderbox, I got error.
senderBox.Items.RemoveAt(senderbox.selectedIndex)

I was told that I need to copy selecteditems to an array and run the For
each routine from the array instead. Can someone please give me some idea
on how to accomplish this?
Thanks a million.

Bill
Private Sub lb1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lb1.SelectedIndexChanged

Dim o As Object

Dim senderBox As ListBox

senderBox = DirectCast(sender, ListBox)

lb2.Items.Clear()

For Each o In senderBox.SelectedItems

lb2.Items.Add(o)

' to remove from senderBox

senderBox.Items.RemoveAt(senderbox.selectedIndex)
Next

End Sub

Nov 21 '05 #3
Thanks Peter.

ArrayList seems to be the one I needed.

Bill

"Peter van der Goes" <p_**********@toadstool.u> wrote in message
news:%2****************@TK2MSFTNGP09.phx.gbl...

"Bill Nguyen" <bi*****************@jaco.com> wrote in message
news:uv**************@TK2MSFTNGP14.phx.gbl...
I use the following example (from another post) and it seemed to work
fine. However, when I add the syntax to remove the selected item from the
senderbox, I got error.
senderBox.Items.RemoveAt(senderbox.selectedIndex)

I was told that I need to copy selecteditems to an array and run the For
each routine from the array instead. Can someone please give me some
idea on how to accomplish this?
Thanks a million.

Bill
Private Sub lb1_SelectedIndexChanged(ByVal sender As System.Object, ByVal
e
As System.EventArgs) Handles lb1.SelectedIndexChanged

Dim o As Object

Dim senderBox As ListBox

senderBox = DirectCast(sender, ListBox)

lb2.Items.Clear()

For Each o In senderBox.SelectedItems

lb2.Items.Add(o)

' to remove from senderBox

senderBox.Items.RemoveAt(senderbox.selectedIndex)
Next

End Sub

Have you used the debugger to step through your code in the event
procedure? Take note of the value of selectedIndex the second time through
your loop. As the item related to the selected index has been removed, my
test indicates the value of SelectedIndex is now -1, which throws the
System.ArgumentOutOfRangeException.
I'd recommend you look at the ArrayList class instead of using an array.

--
Peter [MVP Visual Developer]
Jack of all trades, master of none.

Nov 21 '05 #4

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

4
by: Supra | last post by:
in vb6 listbox1.remove item 5 how will i do in vb.net? regards
0
by: Shawn K | last post by:
I populate a listbox with the following code when my form loads: lstBox.Items.Add("value"); Once the page loads, I give the user the ability to remove items from the list box by selecting an...
4
by: Bilo | last post by:
I dont know what i am doing false. the code : private void button2_Click(object sender, System.EventArgs e) { foreach (string filename in listBox1.SelectedItems)...
4
by: mostafa atalla | last post by:
How can I remove some selected items from the listBox in the run time ??
1
by: Dan Bass | last post by:
I'm looking to develop a listbox with in-place editing where as each item is selected, it grows to fit in all the text boxes. When the item is deselected, it shrinks back to its original size. The...
3
by: Hrcko | last post by:
How to remove a selected item from listBox? Hrcko
4
by: Ron | last post by:
I've got a listbox that holds a list of groups. Users can select a group, hit the remove button and the group should be removed from the listbox. The only problem is that no matter which group you...
1
by: deepak | last post by:
hi , i have 2 listbox and 2 buttons like add and remove, both listbox have multiple selection true so that i can either add or remove multiple selected items. the first listbox is populated with...
7
by: Mike Johnson | last post by:
How do I remove a item that's been selected from a listview? I'm using Visual Basic 2005 express edition. Thanks
0
by: taylorcarr | last post by:
A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
by: ryjfgjl | last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
0
by: ryjfgjl | last post by:
In our work, we often receive Excel tables with data in the same format. If we want to analyze these data, it can be difficult to analyze them because the data is spread across multiple Excel files...
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
0
by: Hystou | last post by:
There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.