private void txttracuu_TextChanged(object sender, EventArgs e)
{
if (txttracuu.Text.Trim() == "")
{
List <Theloai_DTO> lstTL = TheLoai_BUS.LayDSTL();
DgvTheLoai.DataSource = lstTL;
}
else
{
List <Theloai_DTO> lstTimKiem = TheLoai_BUS.TimTL(dieukien, txttracuu.Text);
DgvTheLoai.DataSource = lstTimKiem;
}
}
