| private button1_Click ( object sender, EventArgs e ) : void | ||
| sender | object | |
| e | EventArgs | |
| 리턴 | void | |
private void button1_Click(object sender, EventArgs e)
{
comboBox1.SelectedIndex = ((comboBox1.SelectedIndex - 1) != -1) ? comboBox1.SelectedIndex - 1 : 0;
}