Delete Checked Item from CheckedListView

[marcmc]

I want to iterate through a CheckedListView and delete the checked items ONLY.
Anybody know how to do this? Anybody know a rock solid way of doing this?
I have tried the following but get an exception

unhandled exception of type System.InvalidO perationExcepti on in
system.windows. forms.dll

Additionlal Info: The list that this enumerator is bound to has been
modified.
An enumerator can only be used if the list dosn't change.

Private Sub btnDelete_Click (ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles btnDelete.Click
Dim indexChecked, itemCount As Integer
Dim itemChecked As Object = ChkListBoxRouti nes.CheckedItem s

For Each itemChecked In itemChecked
ChkListBoxRouti nes.Items.Remov eAt(indexChecke d)
ChkListBoxRouti nes.Refresh()
Next
End Sub

[Robin Tucker]

Re: Delete Checked Item from CheckedListView

Wht is "itemChecke d"? I usually fill a collection with items to remove
first, in order that I don't modify the collection while I'm iterating it.


Dim toRemove as New ArrayList

For Each theItem As <someclass> In <somecollection toremovefrom>
toRemove.Add ( theItem )
Next



For Each toRemove As <someclass> In toRemove
<somecollection toremovefrom>.R emove ( toRemove )
Next


(also please use option strict on - it makes your code a lot more
robust....)





"marcmc" <marcmc@discuss ions.microsoft. com> wrote in message
news:5F3D25CA-F373-429B-A64B-E966ACC1B8E0@mi crosoft.com...[color=blue]
>I want to iterate through a CheckedListView and delete the checked items
>ONLY.
> Anybody know how to do this? Anybody know a rock solid way of doing this?
> I have tried the following but get an exception
>
> unhandled exception of type System.InvalidO perationExcepti on in
> system.windows. forms.dll
>
> Additionlal Info: The list that this enumerator is bound to has been
> modified.
> An enumerator can only be used if the list dosn't change.
>
> Private Sub btnDelete_Click (ByVal sender As System.Object, ByVal e As
> System.EventArg s) Handles btnDelete.Click
> Dim indexChecked, itemCount As Integer
> Dim itemChecked As Object = ChkListBoxRouti nes.CheckedItem s
>
> For Each itemChecked In itemChecked
> ChkListBoxRouti nes.Items.Remov eAt(indexChecke d)
> ChkListBoxRouti nes.Refresh()
> Next
> End Sub
>
>
>
>
>
>
>[/color]

[marcmc]

Re: Delete Checked Item from CheckedListView

Sorry Robin,
I don't understand your code too well
It's the <someclass> & <somecollection toremovefrom> I need help with.
Can you post a working example if you have time, I'ld really appreciate it.
marc


"Robin Tucker" wrote:
[color=blue]
> Wht is "itemChecke d"? I usually fill a collection with items to remove
> first, in order that I don't modify the collection while I'm iterating it.
>
>
> Dim toRemove as New ArrayList
>
> For Each theItem As <someclass> In <somecollection toremovefrom>
> toRemove.Add ( theItem )
> Next
>
>
>
> For Each toRemove As <someclass> In toRemove
> <somecollection toremovefrom>.R emove ( toRemove )
> Next
>
>
> (also please use option strict on - it makes your code a lot more
> robust....)
>
>
>
>
>
> "marcmc" <marcmc@discuss ions.microsoft. com> wrote in message
> news:5F3D25CA-F373-429B-A64B-E966ACC1B8E0@mi crosoft.com...[color=green]
> >I want to iterate through a CheckedListView and delete the checked items
> >ONLY.
> > Anybody know how to do this? Anybody know a rock solid way of doing this?
> > I have tried the following but get an exception
> >
> > unhandled exception of type System.InvalidO perationExcepti on in
> > system.windows. forms.dll
> >
> > Additionlal Info: The list that this enumerator is bound to has been
> > modified.
> > An enumerator can only be used if the list dosn't change.
> >
> > Private Sub btnDelete_Click (ByVal sender As System.Object, ByVal e As
> > System.EventArg s) Handles btnDelete.Click
> > Dim indexChecked, itemCount As Integer
> > Dim itemChecked As Object = ChkListBoxRouti nes.CheckedItem s
> >
> > For Each itemChecked In itemChecked
> > ChkListBoxRouti nes.Items.Remov eAt(indexChecke d)
> > ChkListBoxRouti nes.Refresh()
> > Next
> > End Sub
> >
> >
> >
> >
> >
> >
> >[/color]
>
>
>[/color]

[Robin Tucker]

Re: Delete Checked Item from CheckedListView

Something like this:


Private Sub deleteButton_Cl ick(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles deleteButton.Cl ick

Dim toRemove As New ArrayList

For Each theItem As Object In CheckedListBox1 .CheckedItems
toRemove.Add(th eItem)
Next

For Each theItem As Object In toRemove
CheckedListBox1 .Items.Remove(t heItem)
Next

End Sub


"marcmc" <marcmc@discuss ions.microsoft. com> wrote in message
news:67F17F19-31F4-460C-AD02-F21C165BB89C@mi crosoft.com...[color=blue]
> Sorry Robin,
> I don't understand your code too well
> It's the <someclass> & <somecollection toremovefrom> I need help with.
> Can you post a working example if you have time, I'ld really appreciate
> it.
> marc
>
>
> "Robin Tucker" wrote:
>[color=green]
>> Wht is "itemChecke d"? I usually fill a collection with items to remove
>> first, in order that I don't modify the collection while I'm iterating
>> it.
>>
>>
>> Dim toRemove as New ArrayList
>>
>> For Each theItem As <someclass> In <somecollection toremovefrom>
>> toRemove.Add ( theItem )
>> Next
>>
>>
>>
>> For Each toRemove As <someclass> In toRemove
>> <somecollection toremovefrom>.R emove ( toRemove )
>> Next
>>
>>
>> (also please use option strict on - it makes your code a lot more
>> robust....)
>>
>>
>>
>>
>>
>> "marcmc" <marcmc@discuss ions.microsoft. com> wrote in message
>> news:5F3D25CA-F373-429B-A64B-E966ACC1B8E0@mi crosoft.com...[color=darkred]
>> >I want to iterate through a CheckedListView and delete the checked items
>> >ONLY.
>> > Anybody know how to do this? Anybody know a rock solid way of doing
>> > this?
>> > I have tried the following but get an exception
>> >
>> > unhandled exception of type System.InvalidO perationExcepti on in
>> > system.windows. forms.dll
>> >
>> > Additionlal Info: The list that this enumerator is bound to has been
>> > modified.
>> > An enumerator can only be used if the list dosn't change.
>> >
>> > Private Sub btnDelete_Click (ByVal sender As System.Object, ByVal e As
>> > System.EventArg s) Handles btnDelete.Click
>> > Dim indexChecked, itemCount As Integer
>> > Dim itemChecked As Object = ChkListBoxRouti nes.CheckedItem s
>> >
>> > For Each itemChecked In itemChecked
>> > ChkListBoxRouti nes.Items.Remov eAt(indexChecke d)
>> > ChkListBoxRouti nes.Refresh()
>> > Next
>> > End Sub
>> >
>> >
>> >
>> >
>> >
>> >
>> >[/color]
>>
>>
>>[/color][/color]

[marcmc]

Re: Delete Checked Item from CheckedListView

thanks Robin Ill try it
marc

"Robin Tucker" wrote:
[color=blue]
> Something like this:
>
>
> Private Sub deleteButton_Cl ick(ByVal sender As System.Object, ByVal e As
> System.EventArg s) Handles deleteButton.Cl ick
>
> Dim toRemove As New ArrayList
>
> For Each theItem As Object In CheckedListBox1 .CheckedItems
> toRemove.Add(th eItem)
> Next
>
> For Each theItem As Object In toRemove
> CheckedListBox1 .Items.Remove(t heItem)
> Next
>
> End Sub
>
>
> "marcmc" <marcmc@discuss ions.microsoft. com> wrote in message
> news:67F17F19-31F4-460C-AD02-F21C165BB89C@mi crosoft.com...[color=green]
> > Sorry Robin,
> > I don't understand your code too well
> > It's the <someclass> & <somecollection toremovefrom> I need help with.
> > Can you post a working example if you have time, I'ld really appreciate
> > it.
> > marc
> >
> >
> > "Robin Tucker" wrote:
> >[color=darkred]
> >> Wht is "itemChecke d"? I usually fill a collection with items to remove
> >> first, in order that I don't modify the collection while I'm iterating
> >> it.
> >>
> >>
> >> Dim toRemove as New ArrayList
> >>
> >> For Each theItem As <someclass> In <somecollection toremovefrom>
> >> toRemove.Add ( theItem )
> >> Next
> >>
> >>
> >>
> >> For Each toRemove As <someclass> In toRemove
> >> <somecollection toremovefrom>.R emove ( toRemove )
> >> Next
> >>
> >>
> >> (also please use option strict on - it makes your code a lot more
> >> robust....)
> >>
> >>
> >>
> >>
> >>
> >> "marcmc" <marcmc@discuss ions.microsoft. com> wrote in message
> >> news:5F3D25CA-F373-429B-A64B-E966ACC1B8E0@mi crosoft.com...
> >> >I want to iterate through a CheckedListView and delete the checked items
> >> >ONLY.
> >> > Anybody know how to do this? Anybody know a rock solid way of doing
> >> > this?
> >> > I have tried the following but get an exception
> >> >
> >> > unhandled exception of type System.InvalidO perationExcepti on in
> >> > system.windows. forms.dll
> >> >
> >> > Additionlal Info: The list that this enumerator is bound to has been
> >> > modified.
> >> > An enumerator can only be used if the list dosn't change.
> >> >
> >> > Private Sub btnDelete_Click (ByVal sender As System.Object, ByVal e As
> >> > System.EventArg s) Handles btnDelete.Click
> >> > Dim indexChecked, itemCount As Integer
> >> > Dim itemChecked As Object = ChkListBoxRouti nes.CheckedItem s
> >> >
> >> > For Each itemChecked In itemChecked
> >> > ChkListBoxRouti nes.Items.Remov eAt(indexChecke d)
> >> > ChkListBoxRouti nes.Refresh()
> >> > Next
> >> > End Sub
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >>
> >>
> >>[/color][/color]
>
>
>[/color]

[alantolan@users.com]

Re: Delete Checked Item from CheckedListView

>Private Sub btnDelete_Click (ByVal sender As System.Object, ByVal e As[color=blue]
>System.EventAr gs) Handles btnDelete.Click
> Dim indexChecked, itemCount As Integer
> Dim itemChecked As Object = ChkListBoxRouti nes.CheckedItem s[/color]
[color=blue]
> For Each itemChecked In itemChecked
> ChkListBoxRouti nes.Items.Remov eAt(indexCheck ed)
> ChkListBoxRouti nes.Refresh()
> Next
> End Sub[/color]


Try using Remove() instead of RemoveAt(). The following worked for me

For Each itm As ListViewItem In lvwMain.Checked Items
lvwMain.Items.R emove(itm)
Next

There was no need for a refresh - repainted itself after removing the
items.