如何将项目从列表框添加到另一个列表框？

Question

I know from textbox to listbox you can use something like:

listBox1.Items.Add(textBox1.Text)

But how would this work between two listboxes? Thanks.

Answer 1

Assuming the SelectionMode is set to One , and you want to Copy the selected item:

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    If ListBox1.SelectedIndex <> -1 Then
        ListBox2.Items.Add(ListBox1.SelectedItem)
    End If
End Sub

If you want to Move the selected item, then:

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    If ListBox1.SelectedIndex <> -1 Then
        ListBox2.Items.Add(ListBox1.SelectedItem)
        ListBox1.Items.RemoveAt(ListBox1.SelectedIndex)
    End If
End Sub