private void button1_Click(object sender, EventArgs e)
{
switch (typeSearch)
{
case 1:
{
dataGridView4.DataSource = Sach_BUS.TimTheoTheLoai(int.Parse(textBox1.Text));
break;
}
case 2:
{
dataGridView4.DataSource = Sach_BUS.TimTheoTacGia(textBox1.Text);
break;
}
case 3:
{
dataGridView4.DataSource = Sach_BUS.TimTheoTenSach(textBox1.Text);
break;
}
case 4:
{
dataGridView4.DataSource = Sach_BUS.TimTheoMaSach(int.Parse(textBox1.Text));
break;
}
}
}
