how to make this asp .net code work?
<p>Can anyone tell me what I'm doing wrong?
    //--- menuFac ---</p>

<pre><code>public void UpdatePageById()
{
    db.ModifyData("UPDATE tblsider SET colOverskrift=@1, colTekst=@2  WHERE colID=@3", _overskrift, _tekst, _id);
}

//--- where i'm trying to get some from db to edit and save the edited ---
menuFac objTekst = new menuFac();
protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        objTekst._id = int.Parse(Request.QueryString["colID"]);

        DataRow value = objTekst.GetPageById();

        txtOverskrift.Text = value["colOverskrift"].ToString();
        txtTekst.Text = value["colTekst"].ToString();
    }

}
protected void btnSubmit_Click(object sender, EventArgs e)
{

    objTekst._id = int.Parse(Request.QueryString["colID"]);

    objTekst._overskrift = txtOverskrift.Text;
    objTekst._tekst = txtTekst.Text;

    objTekst.UpdatePageById();

    Response.Redirect("Protected.aspx");
}
</code></pre>
