C# Select Multiple rows show in multiple Textbox [ERROR=ติดปัญหานิดหนอ่ยครับ]

txtW1.Text = (dt1.Row.Count >= 1)  ? dt1.Rows[0]["Queue_ID"] + "";
txtW2.Text = (dt1.Row.Count >= 2)  ? dt1.Rows[1]["Queue_ID"] + "";
txtW3.Text = (dt1.Row.Count >= 3)  ? dt1.Rows[2]["Queue_ID"] + "";
txtW4.Text = (dt1.Row.Count >= 4)  ? dt1.Rows[3]["Queue_ID"] + "";
txtW5.Text = (dt1.Row.Count >= 5)  ? dt1.Rows[4]["Queue_ID"] + "";
txtW6.Text = (dt1.Row.Count >= 6)  ? dt1.Rows[5]["Queue_ID"] + "";
txtW7.Text = (dt1.Row.Count >= 7)  ? dt1.Rows[6]["Queue_ID"] + "";
txtW8.Text = (dt1.Row.Count >= 8)  ? dt1.Rows[7]["Queue_ID"] + "";  

            try
            {
                string sql1 = "select top 8 Queue_ID from tbl_Service where Status_Q NOT IN ('Treatment','Successfully')  and convert(date ,Date_Q) = (CONVERT(date, GETDATE(), 120))";
                DataTable dt1 = new DataTable();
                SqlDataAdapter da1 = new SqlDataAdapter(sql1, connection);
                da1.Fill(dt1);
                TextBox[] tbs = { txtW1, txtW2, txtW3, txtW4, txtW5, txtW6, txtW7, txtW8 };
                for (int i = 0; i < dt1.Rows.Count; i++)
                {
                    tbs[i].Text = dt1.Rows[i]["Queue_ID"] + "";
                }

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }