Server.HtmlEncode DataBinder

Can anyone help with Server.HtmlEncode encoding this?

'<%# DataBinder.Eval(Container.DataItem, "CAT_ID",
"pageview.aspx?tab=1&catid={0}") %
I've tried using similar to this:
<%# Server.HtmlEncode(DataBinder.Eval(Container,
"DataItem.Field1").ToString()) %
but get error message BC30455: Argument not specified for parameter '

Many thanks'<%#"/admin/managenews.aspx?action=2&id="+DataBinder.Eval(Container.DataItem,"NID")%>'
this may help u
"Fossie" <gillmcd@.ihug.co.nz> wrote in message
news:1148111001.439320.296410@.38g2000cwa.googlegro ups.com...
> Can anyone help with Server.HtmlEncode encoding this?
> '<%# DataBinder.Eval(Container.DataItem, "CAT_ID",
> "pageview.aspx?tab=1&catid={0}") %>
> I've tried using similar to this:
> <%# Server.HtmlEncode(DataBinder.Eval(Container,
> "DataItem.Field1").ToString()) %>
> but get error message BC30455: Argument not specified for parameter '
> Many thanks
Thanks - I tried the + and got this error message:

Conversion from string "pageview.aspx?tab=1&catid=1" to type 'Double'
is not valid.
'<%#"/pageview.aspx?tab=1&catid="+DataBinder.Eval(Container.DataItem,"CAT_ID")%>'
"Fossie" <gillmcd@.ihug.co.nz> wrote in message
news:1148112901.230750.47520@.j73g2000cwa.googlegro ups.com...
> Thanks - I tried the + and got this error message:
> Conversion from string "pageview.aspx?tab=1&catid=1" to type 'Double'
> is not valid.
<asp:HyperLink id="hyperlinkk1" Runat="server"
NavigateUrl='<%#"/pageview.aspx?tab=1&catid="+DataBinder.Eval(Container.DataItem,"CAT_ID")%>'</asp:HyperLink>
"Fossie" <gillmcd@.ihug.co.nz> wrote in message
news:1148112901.230750.47520@.j73g2000cwa.googlegro ups.com...
> Thanks - I tried the + and got this error message:
> Conversion from string "pageview.aspx?tab=1&catid=1" to type 'Double'
> is not valid.