public ucQlyphieunhaphang() { InitializeComponent(); if (frmLogin.rule != "Quản lí kho") { btnThemPN.Enabled = false; } if (frmLogin.rule == "admin") { btnThemPN.Enabled = false; } dgvDanhSachDonHangNhap.DataSource = phieunhapController.GetAllPhieuNhap(); cbbTimtheo.SelectedIndex = 0; }