private void btnTimSach_Click(object sender, EventArgs e)
{
FormTimSach form = new FormTimSach();
form.Show();
this.Visible = false;
form.Disposed += FormTimSach_Disposed;
}
private void FormTimSach_Disposed(object sender, EventArgs e)
{
FormTimSach form = sender as FormTimSach;
this.Visible = true;
idSach = form.IdSachChon;
if (idSach != -1)
{
LoadSach();
}
else
{
txtIDSach.Text = "";
txtTenSach.Text = "";
txtTinhTrang.Text = "";
}
}