private void ByByWindows(object sender, FormClosedEventArgs e)
{
Form frm;
if (sender is Form)
{
frm = (Form)sender;
if (frm == frmLietKeTinhGia)
{
frmLietKeTinhGia = null;
}
if (frm == frmBangGiaGiay)
{
frmBangGiaGiay = null;
}
if (frm == frmBangGiaThanhPham)
{
frmBangGiaThanhPham = null;
}
if (frm == frmBangGiaInNhanh)
{
frmBangGiaInNhanh = null;
}
if (frm == frmBangGiaInNhanhMay)
{
frmBangGiaInNhanhMay = null;
}
if (frm == frmTinhThu)
{
frmTinhThu = null;
}
}
}
private void btnBangGiaThanhPham_Click(object sender, EventArgs e)
{
if (frmBangGiaThanhPham == null)
{
frmBangGiaThanhPham = new BangGiaThanhPhamForm();
frmBangGiaThanhPham.MinimizeBox = false;
frmBangGiaThanhPham.MaximizeBox = false;
frmBangGiaThanhPham.FormClosed += new FormClosedEventHandler(ByByWindows);
frmBangGiaThanhPham.Show();
}
else
{
frmBangGiaThanhPham.Focus();
}
}