当我选择 combobox1 最后一个值时，combobox2 最后一个值将被自动选择

Question

我有2个组合框我想要实现这样的事情，当我选择combobox1最后一个值combobox2最后一个值将被自动选中，我怎样才能做到这一点使用C＃代码，请帮帮我，

Answer 1

In the SelectionChanged event of ComboBox1 , set the SelectedIndex of ComboBox2 to (the number of items in ComboBox2 ) - 1) . This code should work:

Private Sub ComboBox1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ComboBox1.SelectedIndexChanged
    ComboBox2.SelectedIndex = ComboBox2.Items.Count - 1
End Sub

Answer 2

The Bellow Code Work Fine For Me anyway thanks to all for your replays... :)

  private void combobox1_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (combobox1.SelectedIndex == (combobox1.Items.Count - 1))
        {
            combobox2.SelectedIndex = combobox2.Items.Count - 1;
        }
    }