怎么用代码实现"不选中"Listbox的某一项?

Question

 if(lb.SelectedIndex != 2) 

Answer 1

 ListBox lb = new ListBox();
            if(lb.SelectedIndex != 2) 

Answer 2

            ListBox lb = new ListBox();
            if (lb.SelectedIndex == 2)//如果 2 被选中
                lb.SetSelected(2, false);//设置为不选中

Answer 3

   private void listBox1_Click(object sender, EventArgs e)
        {
            if (listBox1.Items.Count > 1)
                listBox1.SetSelected(1, false);
        }