列表项不起作用 [英] listitems not working

问题描述

我有两个列表框.

将listitems从list1移到list2时，它会正常工作.

但是，当我将listitems从list2移到list1时，它不会在list1中更新. 我根据列表使用相同的代码.

这里的问题是什么...

看到我的代码
------------

Hi,

I have two listboxes.

When move listitems from list1 to list2, it will be working fine.

But, when i move listitems from list2 to list1, it will not update in the list1..
i am using the same code for both based on the list.

what is the problem over here...

see my code
------------

Protected Sub btnAddClick_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnAddClick.Click
       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
           lstEx.Items.Add(item)
           lstTot.Items.Remove(item)
       End If
   End Sub
   Protected Sub btnRemClick_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRemClick.Click
       If lstEx.SelectedIndex > -1 Then
           Dim _value As String = lstEx.SelectedItem.Value
           Dim _text As String = lstEx.SelectedItem.Text
           Dim item As New ListItem()
           item.Text = _text
           item.Value = _value
           lstEx.Items.Remove(item)
           lstTot.Items.Add(item)
       End If
   End Sub

推荐答案

可能首先添加，然后删除

maybe first ADD and then Remove

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