private void toolStripButton4_Click(object sender, EventArgs e) { frmSach ds = new frmSach(); ds.MdiParent = this; ds.Show(); }
private void btn_Sach_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e) { frmSach f = new frmSach(); if (ExistForm(f)) { return; } f.MdiParent = this; f.Show(); }
private void danhMụcSáchToolStripMenuItem_Click(object sender, EventArgs e) { //using (frmSach f = new frmSach()) //{ // f.ShowDialog(); //} frmSach ds = new frmSach(); ds.MdiParent = this; ds.Show(); }