will not be deleting from listbox1 items

Question

1.00/5 (1 vote)

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Hi,

When i move from list1 to list2, it will working fine.
but, meantime it will not be deleting from list1.

what is the problem in my code.
see code below.
-----------------

VB

If lstTot.SelectedIndex > -1 Then
            Dim _value As String = lstTot.SelectedItem.Value
            Dim _text As String = lstTot.SelectedItem.Text
            Dim item As New ListItem()
            item.Text = _text
            item.Value = _value
            For Each li As ListItem In lstTot.Items
                If li.Selected = True Then
                    lstEx.Items.Add(li.Text)
                    lstTot.Items.Remove(li.Text)
                End If
            Next
        End If

Posted 14-Jul-11 0:25am

gani7787

Updated 14-Jul-11 16:02pm

thatraja

v2

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3 solutions

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Mr.Sourav.Maitra · Answer 1 · 2011-07-14T00:33:00

Solution 1

After execution of the loop, bind lstTot once again. Hope that will resolve your problem. You didn't mention how lstTot got populated

Posted 14-Jul-11 0:33am

Mr.Sourav.Maitra

Raju Prajapati · Answer 2 · 2011-07-14T00:37:00

Solution 2

In Remove method pass only 'li' in place of 'li.Text'

Posted 14-Jul-11 0:37am

Raju Prajapati

Comments

gani7787 14-Jul-11 7:03am

Hi,

I am getting error as below if i use 'li' in place of 'li.Text'

Error : "Collection was modified; enumeration operation may not execute."

What is this...?

nagendrathecoder 15-Jul-11 3:05am

This is not allowed, modification inside enumeration is not allowed on an object which is being enumerated.

nagendrathecoder · Answer 3 · 2011-07-14T21:04:00

Solution 3

This is not a right way to remove items from list. You may get errors.

Try like this:

For Each obj As Object In lstTot.SelectedItems
    lstEx.Items.Add(obj)
Next
While lstTot.SelectedIndices.Count > 0
      lstTot.Items.RemoveAt(lstTot.SelectedIndices.Item(0))
End While

Posted 14-Jul-11 21:04pm

nagendrathecoder

Updated 14-Jul-11 21:23pm

v3