Cookies are getting added up when we perform delete oprtn

string s, t;

string[] a = new string[6];

int id;

string fname, fcost, cname,fid, qty;

int b,count = 0;

protected void Page_Load(object sender, EventArgs e)

{

id = Convert.ToInt32(Request.QueryString["id"].ToString());

DataTable dt = new DataTable();

dt.Rows.Clear();

dt.Columns.AddRange(new DataColumn[7] { new DataColumn("fname"), new DataColumn("fcost"), new DataColumn("fid"), new DataColumn("qty"), new DataColumn("cname"),new DataColumn("subtotal"),new DataColumn("id")});

if (Request.Cookies["aa"] != null)

{

s = Convert.ToString(Request.Cookies["aa"].Value);

string[] strarr = s.Split('|');

for (int i = 0; i < strarr.Length; i++)

{

t = Convert.ToString(strarr[i].ToString());

string[] strarr1 = t.Split(',');

for (int j = 0; j < strarr1.Length; j++)

{

a[j] = strarr1[j].ToString();

}

dt.Rows.Add(a[0].ToString(), a[1].ToString(), a[2].ToString(), a[3].ToString(), a[4].ToString(), (Convert.ToInt32(a[1].ToString()) * Convert.ToInt32(a[3].ToString())), i.ToString());

}

}

// dt.Rows.RemoveAt(id);

dt.Rows[id].Delete();

b=dt.Rows.Count;

//Response.Write(current);

Response.Cookies["aa"].Expires = DateTime.Now.AddDays(-1);

Response.Write(dt.Rows.ToString());

foreach (DataRow dr in dt.Rows)

{

fname = dr["fname"].ToString();

fcost = dr["fcost"].ToString();

cname = dr["cname"].ToString();

fid = dr["fid"].ToString();

qty = dr["qty"].ToString();

count = count + 1;

if (count == 1)    // here the problem is occuring

{

Response.Cookies["aa"].Value = fname.ToString() + "," + fcost.ToString() + "," + fid.ToString() + "," + qty.ToString() + "," + cname.ToString();

Response.Cookies["aa"].Expires = DateTime.Now.AddHours(1);

}

else if(count>1 && count<=b)

{

Response.Cookies["aa"].Value = Request.Cookies["aa"].Value + "|" + fname.ToString() + "," + fcost.ToString() + "," + fid.ToString() + "," + qty.ToString() + "," + cname.ToString();

Response.Cookies["aa"].Expires = DateTime.Now.AddHours(1);

}

}

Response.Redirect("cart.aspx");