09/02/10 20:40:56
>>218
ListBox.ClearSelected()を見たほうがいいかもね。
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
ListBox ctl = (ListBox)sender;
if (ctl.SelectedIndex == -1)
{
label1.Text = "Cleared!";
}
else
{
label1.Text = ctl.SelectedItem.ToString();
}
}