case "utbildare":
   rewriteToUrl = "/ShowPresentation.aspx?utbildareId=" + GetPresentation(Identifier, site);
   break;

////////////////////////////////////


private string GetPresentation(string Identifier, string site)
{
    string RetVal = String.Empty;
    SqlCommand sc = new SqlCommand();
    sc.CommandText = "SELECT utbildareid FROM utbildarpresentationer WHERE site = @site AND urlbase = @Identifier";
    sc.CommandType = System.Data.CommandType.Text;
    sc.Parameters.Add("@Identifier", SqlDbType.VarChar, 150).Value = Identifier;
    sc.Parameters.Add("@site", SqlDbType.VarChar, 2).Value = site;
    SqlDataReader dr = DataHandler.CommandDataReader(sc);
    if (dr.HasRows)
    {
        dr.Read();
        RetVal = Convert.ToString(dr["utbildareid"]);
    }
    dr.Close();
    return RetVal;
}