private void tsbtnXuatHang_Click(object sender, EventArgs e)
{
if (!IsShow("frmXuatHang"))
{
frmXuatHang xuathang = new frmXuatHang();
xuathang.StartPosition = FormStartPosition.CenterScreen;
xuathang.MdiParent = this;
xuathang.Show();
}
else
{
foreach (Form frmXuatHang in this.MdiChildren)
{
if (frmXuatHang.Name == "frmXuatHang")
{
frmXuatHang.Activate();
break;
}
}
}
}
private void mnuXuatHang_Click(object sender, EventArgs e)
{
frmXuatHang xuatHang = new frmXuatHang();
xuatHang.ShowDialog();
}