add selected item from listbox to textbox but do not remove text after from textbox after i add from listbox

Question

Example what i want so if i type some keywords to textbox i do not it remove text from textbox when click on listbox and add that selected item to textbox but only after keywords and do not remove them both just leave as it is ?

How can you do that ?

this is code i have for so far.

Private Sub ListBox2_SelectedIndexChanged(ByVal sender As System.Object, 
        ByVal e As System.EventArgs) Handles ListBox2.SelectedIndexChanged
        TextBox1.Text = ListBox2.SelectedItem
End Sub

Thanks.

Answer 1

Private Sub ListBox1_SelectedIndexChanged(sender As System.Object, e As System.EventArgs) Handles ListBox2.SelectedIndexChanged
    TextBox1.Text += ListBox2.SelectedItem
End Sub

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