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.InvalidOperationException 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.EventArgs) Handles btnDelete.Click
Dim indexChecked, itemCount As Integer
Dim itemChecked As Object = ChkListBoxRoutines.CheckedItems

For Each itemChecked In itemChecked
ChkListBoxRoutines.Items.RemoveAt(indexChecked)
ChkListBoxRoutines.Refresh()
Next
End Sub

[Robin Tucker]

Wht is "itemChecked"? 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 <somecollectiontoremovefrom>
toRemove.Add ( theItem )
Next

For Each toRemove As <someclass> In toRemove
<somecollectiontoremovefrom>.Remove ( toRemove )
Next
(also please use option strict on - it makes your code a lot more
robust....)

"marcmc" <ma****@discussions.microsoft.com> wrote in message
news:5F**********************************@microsof t.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.InvalidOperationException 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.EventArgs) Handles btnDelete.Click
Dim indexChecked, itemCount As Integer
Dim itemChecked As Object = ChkListBoxRoutines.CheckedItems

For Each itemChecked In itemChecked
ChkListBoxRoutines.Items.RemoveAt(indexChecked)
ChkListBoxRoutines.Refresh()
Next
End Sub

[marcmc]

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

Wht is "itemChecked"? 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 <somecollectiontoremovefrom>
toRemove.Add ( theItem )
Next

For Each toRemove As <someclass> In toRemove
<somecollectiontoremovefrom>.Remove ( toRemove )
Next
(also please use option strict on - it makes your code a lot more
robust....)

"marcmc" <ma****@discussions.microsoft.com> wrote in message
news:5F**********************************@microsof t.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.InvalidOperationException 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.EventArgs) Handles btnDelete.Click
Dim indexChecked, itemCount As Integer
Dim itemChecked As Object = ChkListBoxRoutines.CheckedItems

For Each itemChecked In itemChecked
ChkListBoxRoutines.Items.RemoveAt(indexChecked)
ChkListBoxRoutines.Refresh()
Next
End Sub

[Robin Tucker]

Something like this:
Private Sub deleteButton_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles deleteButton.Click

Dim toRemove As New ArrayList

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

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

End Sub
"marcmc" <ma****@discussions.microsoft.com> wrote in message
news:67**********************************@microsof t.com...

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

Wht is "itemChecked"? 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 <somecollectiontoremovefrom>
toRemove.Add ( theItem )
Next

For Each toRemove As <someclass> In toRemove
<somecollectiontoremovefrom>.Remove ( toRemove )
Next
(also please use option strict on - it makes your code a lot more
robust....)

"marcmc" <ma****@discussions.microsoft.com> wrote in message
news:5F**********************************@microsof t.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.InvalidOperationException 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.EventArgs) Handles btnDelete.Click
> Dim indexChecked, itemCount As Integer
> Dim itemChecked As Object = ChkListBoxRoutines.CheckedItems
>
> For Each itemChecked In itemChecked
> ChkListBoxRoutines.Items.RemoveAt(indexChecked)
> ChkListBoxRoutines.Refresh()
> Next
> End Sub
>
>
>
>
>
>
>

[marcmc]

thanks Robin Ill try it
marc

"Robin Tucker" wrote:

Something like this:
Private Sub deleteButton_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles deleteButton.Click

Dim toRemove As New ArrayList

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

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

End Sub
"marcmc" <ma****@discussions.microsoft.com> wrote in message
news:67**********************************@microsof t.com...

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

Wht is "itemChecked"? 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 <somecollectiontoremovefrom>
toRemove.Add ( theItem )
Next

For Each toRemove As <someclass> In toRemove
<somecollectiontoremovefrom>.Remove ( toRemove )
Next
(also please use option strict on - it makes your code a lot more
robust....)

"marcmc" <ma****@discussions.microsoft.com> wrote in message
news:5F**********************************@microsof t.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.InvalidOperationException 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.EventArgs) Handles btnDelete.Click
> Dim indexChecked, itemCount As Integer
> Dim itemChecked As Object = ChkListBoxRoutines.CheckedItems
>
> For Each itemChecked In itemChecked
> ChkListBoxRoutines.Items.RemoveAt(indexChecked)
> ChkListBoxRoutines.Refresh()
> Next
> End Sub
>
>
>
>
>
>
>

[alantolan]

>Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As

System.EventArgs) Handles btnDelete.Click
Dim indexChecked, itemCount As Integer
Dim itemChecked As Object = ChkListBoxRoutines.CheckedItem*s For Each itemChecked In itemChecked
ChkListBoxRoutines.Items.Remov*eAt(indexChecked)
ChkListBoxRoutines.Refresh()
Next
End Sub

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

For Each itm As ListViewItem In lvwMain.CheckedItems
lvwMain.Items.Remove(itm)
Next

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