Checkboxlist selected value under Edit mode

dash,
Please have a look in to my code i am trying to edit the fields which also has a check box list control where i have binded values dynamically..
<pre lang="cs">protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
if (Request.QueryString["Id"] != null)
{
Edit();
}
}
}

protected void Edit()
{
int id = Convert.ToInt32(Request.QueryString["Id"].ToString());
DataTable dt1 = s.GetAccessRightsByRole(id.ToString());
if (dt1.Rows.Count > 0)
{
for (int i = 0; i < dt.Rows.Count; i++)
{
if (dt1.Rows[i]["RightId"].ToString() == "1")
{
CheckBoxList1.Items[0].Selected = true;
}
if (dt1.Rows[i]["RightId"].ToString() == "2")
{
CheckBoxList1.Items[1].Selected = true;
}
if (dt1.Rows[i]["RightId"].ToString() == "3")
{
CheckBoxList1.Items[2].Selected = true;
}
if (dt1.Rows[i]["RightId"].ToString() == "4")
{
CheckBoxList1.Items[3].Selected = true;
}
if (dt1.Rows[i]["RightId"].ToString() == "5")
{
CheckBoxList1.Items[4].Selected = true;
}
if (dt1.Rows[i]["RightId"].ToString() == "6")
{
CheckBoxList1.Items[5].Selected = true;
}
if (dt1.Rows[i]["RightId"].ToString() == "7")
{
CheckBoxList1.Items[6].Selected = true;
}
if (dt1.Rows[i]["RightId"].ToString() == "8")
{
CheckBoxList1.Items[7].Selected = true;
}
if (dt1.Rows[i]["RightId"].ToString() == "9")
{
CheckBoxList1.Items[8].Selected = true;
}
}

if (dt1.Rows.Count == 0)
{
for (int i = 0; i < CheckBoxList1.Items.Count; i++)
{
CheckBoxList1.Items[i].Selected = false;
}
}
}
}</pre>