[amgad525]

Form1_Load event

PHP كود :

private void Form1_Load(object sender, EventArgs e)
{
    CountryLst.SelectedIndex = Properties.Settings.Default.chacbox;
} 


Form1_FormClosing event

PHP كود :

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{

    Properties.Settings.Default.chacbox = CountryLst.SelectedIndex;

    Properties.Settings.Default.Save();
}