private void btnDangNhap_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
Form frm = this.CheckExists(typeof(FormDangNhap));
if (frm != null) frm.Activate();
else
{
FormDangNhap f = new FormDangNhap();
f.MdiParent = this;
f.Show();
}
}
private void Form1_Load(object sender, EventArgs e)
{
Form frm = this.CheckExists(typeof(FormDangNhap));
if (frm != null) frm.Activate();
else
{
FormDangNhap f = new FormDangNhap();
f.MdiParent = this;
f.Show();
}
}