void loadnv()
{
DAONhanVien nv = new DAONhanVien();
DataTable dt = new DataTable();
dt = nv.getNhanVien();
dataGridView1.DataSource = dt;
}
private void btn_refresh_Click_2(object sender, EventArgs e)
{
txt_idnv.Text = "";
txt_hovaten.Text = "";
txt_sdt.Text = "";
txt_luong.Text = "";
txt_username.Text = "";
txt_password.Text = "";
txt_timkiem.Text = "";
txt_search.Text = "";
DAONhanVien nv = new DAONhanVien();
DataTable dt = new DataTable();
dt = nv.getNhanVien();
dataGridView1.DataSource = dt;
}
