private void btnSach_Click(object sender, EventArgs e)
{
frmSach frms = new frmSach();
this.Hide();
frms.ShowDialog();
this.Show();
}
private void SachTool_Click(object sender, EventArgs e)
{
frmSach f = new frmSach();
f.ShowDialog();
}
private void sốPhiếuMượnToolStripMenuItem_Click(object sender, EventArgs e)
{
frmSach nv = new frmSach();
nv.ShowDialog();
}
private void sáchCóTrongThưViệnToolStripMenuItem_Click(object sender, EventArgs e)
{
frmSach sach = new frmSach();
sach.ShowDialog();
}