void timkiem()
{
if (comboBox1.Text == "Sản Phẩm")
{
dtgHangHoa.DataSource = hanghoaBUS.SearchData(textBox1.Text);
}
else if (comboBox1.Text == "Đơn Vị Tính")
{
dtgHangHoa.DataSource = hanghoaBUS.SearchData1(textBox1.Text);
}
else if (comboBox1.Text == "Giá Bán")
{
dtgHangHoa.DataSource = hanghoaBUS.SearchData2(textBox1.Text);
}
else if (comboBox1.Text == "Giá Mua")
{
dtgHangHoa.DataSource = hanghoaBUS.SearchData3(textBox1.Text);
}
else if (comboBox1.Text == "SL")
{
dtgHangHoa.DataSource = hanghoaBUS.SearchData4(textBox1.Text);
}
else if (comboBox1.Text == "Ghi Chú")
{
dtgHangHoa.DataSource = hanghoaBUS.SearchData5(textBox1.Text);
}
}