private void btnDiem_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e) { Form frmAction = CheckExists(typeof(FormDiem)); if (frmAction != null) { frmAction.Activate(); } else { FormDiem frmDiem = new FormDiem(); frmDiem.MdiParent = this; frmDiem.Show(); btnLop.Enabled = false; btnSinhVien.Enabled = false; btnMonHoc.Enabled = false; btnDangXuat.Enabled = false; groupBaoCao.Enabled = false; groupTaiKhoan.Enabled = false; } }
private void button6_Click(object sender, EventArgs e) { hideAllFrom(); f3.Show(); }