how to pass id of selected row to next page

public partial class ADMIN_SELECT_IMAGE : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
            BindGridView();
    }

    private void BindGridView()
    {
        ConnectionStringSettings set = ConfigurationManager.ConnectionStrings["WATERMARKING"];
        String cns = set.ConnectionString;
        SqlConnection con = new SqlConnection(cns);
        con.Open();
        string sql = "Select IMAGE_ID,IMAGE_TYPE,IMAGE_SIZE,IMAGE_CONTENT from IMAGE";
        SqlDataAdapter da = new SqlDataAdapter(sql, cns);
        DataTable dt = new DataTable();
        da.Fill(dt);
        gvCheckboxes.DataSource = dt;

        gvCheckboxes.DataBind();

        con.Close();
    }
   
    protected void gvCheckboxes_SelectedIndexChanged(object sender, EventArgs e)
    {

    }
   
    private void SelectRecords(StringCollection sc)
    {
        //int id =(int)this.gvCheckboxes.SelectedDataKey.Value;
        ConnectionStringSettings set = ConfigurationManager.ConnectionStrings["WATERMARKING"];
        String cns = set.ConnectionString;
        SqlConnection con = new SqlConnection(cns);
        con.Open();

        StringBuilder sb = new StringBuilder(string.Empty);
       
        foreach (string item in sc)
        {
            const string sqlStatement = "SELECT IMAGE_ID,IMAGE_CONTENT FROM IMAGE WHERE IMAGE_ID";
           
            sb.AppendFormat("{0}='{1}'; ", sqlStatement, item);
           
        }

        try
        {
            SqlCommand cmd = new SqlCommand(sb.ToString(), con);
            SqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);

             reader.Read();
             if (reader.HasRows)
            {
                Response.Redirect("ADMIN_SELECT_LOGO.aspx");
             
            }
            else
            {
                //Response.Write("image deleted successfully");
                Response.Write("error in selection");
            }
        }
        catch (System.Data.SqlClient.SqlException ex)
        {
            string msg = "Error:";
            msg += ex.Message;
            throw new Exception(msg);
        }
        finally
        {
            con.Close();
        }
    }

    protected void ButtonSelect_Click(object sender, EventArgs e)
    {
        StringCollection sc = new StringCollection();
        string id = string.Empty;

        for (int i = 0; i < gvCheckboxes.Rows.Count; i++)
        {
            CheckBox cb = (CheckBox)gvCheckboxes.Rows[i].Cells[0].FindControl("CheckBox1");

            if (cb != null)
            {
                if (cb.Checked)
                {
                    id = gvCheckboxes.Rows[i].Cells[1].Text;
                    sc.Add(id);
                }
            }
        }

        SelectRecords(sc);
        BindGridView();
    }

    protected void gvCheckBoxes_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.Footer)
        {
            Button b = (Button)e.Row.FindControl("ButtonSelect");
            b.Attributes.Add("onclick", "return ConfirmOnSelect();");
        }
    }

    protected void LinkButton7_Click1(object sender, EventArgs e)
    {
        Response.Redirect("ADMIN_HOME.aspx");
    }
    protected void LinkButton6_Click1(object sender, EventArgs e)
    {
        Response.Redirect("LOGIN.aspx");
    }
}