public Form_main()
{
InitializeComponent();
if (frm == null)
{
frm = this;
}
this.control1.Enabled = false;
this.heder1.Enabled = false;
}
private void btn_exit_Click(object sender, EventArgs e)
{
Form_main f = new Form_main();
// f.Location = new Point(20, 20);
f.Show();
((Form)this.TopLevelControl).Close();
}
static void frm_FormClosed(object sender, FormClosedEventArgs e)
{
frm = null;
}