private void barButtonItem9_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
{
frmTraSach fm = new frmTraSach();
bool Exist = ExistForm(fm);
if (Exist)
{
return;
}
fm.MdiParent = this;
fm.Show();
}
private void pictureBox12_Click(object sender, EventArgs e)
{
Form Tra = new frmTraSach();
Tra.ShowDialog();
}
private void trảSáchToolStripMenuItem_Click(object sender, EventArgs e)
{
Form Tra = new frmTraSach();
Tra.ShowDialog();
}