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