Data reader with gridview ?

Question

Hi

i tried as below its not loading data into grid view when i tried using dataset it worked perfectly 

 OleDbCommand cmd = new OleDbCommand("select * from customer", con);

            con.Open();

            MessageBox.Show(con.State.ToString());

            OleDbDataReader dr = cmd.ExecuteReader();

      

            con.Close();

            MessageBox.Show(con.State.ToString());

            dataGridView1.DataSource = dr;

Cheers & thanks everyone