HyperLink with NavigateUrl with Eval(). Where is the mistake?

Question

First I was changing HyperLink.NavigateUrl in code-behind on Page_Load().

But after I decided to do it in design using Eval() method.

<asp:HyperLink runat="server"
     NavigateUrl='<%# String.Format("~/Refuse.aspx?type={0}&id={1}", Eval("type"), Eval("id")) %>' Text="Refuse" />

or

<asp:HyperLink ID="urlRefuse" runat="server"
     NavigateUrl='<%# String.Format("~/Refuse.aspx?type={0}&id={1}", Request["type"], Request["id"]) %>' Text="Refuse" />

where id and type - are variables from Request.

But it doesn't work. Only raw text 'Refuse' is shown. Where is my mistake? Thanks in advance.

Id prperty of ur hyperlink is missing... Is that causes error i dont know... — ACP, Nov 22 '09 at 18:41
@Pandiya: Sounds mysteriously and in the same time - realistic. But unfortunately didn't help. — abatishchev, Nov 22 '09 at 18:44
NavigateUrl='<%#Eval("type","id", "~/Refuse.aspx?type={0}&id={1}") %>' — ACP, Nov 22 '09 at 18:45
Try NavigateUrl='<%#string.Format("Sync.aspx?Msg={0}", HttpUtility.UrlEncode(Eval("Msg"))%>' — ACP, Nov 22 '09 at 18:54
Where you use the hyper within a datalist,gridview or the page — ACP, Nov 22 '09 at 19:01
Hai, see this if it helps [http://forums.asp.net/p/1490115/3505218.aspx](http://forums.asp.net/p/1490115/3505218.aspx) — ACP, Nov 22 '09 at 18:23
Thanks! I'm using a method from post #2 and it doesn't work. I want to figure out where am I wrong.. — abatishchev, Nov 22 '09 at 18:33

score 63 · Accepted Answer · edited Feb 11 '11 at 08:13

63

this is working great

NavigateUrl='<%# Eval("type","~/Refuse.aspx?type={0}") %>'

edited Feb 11 '11 at 08:13

abatishchev

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answered Feb 10 '11 at 14:02

Hamdy Mohamed

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I stopped using web forms years ago, and yet I come years later to learn something like this was so easy. – Ernesto Sep 28 '16 at 21:18

score 17 · Answer 2 · answered Oct 23 '10 at 10:58

17

This worked for me

NavigateUrl='<%# String.Format("{0}.aspx?ID={1}", DataBinder.Eval(Container.DataItem, "Category"), DataBinder.Eval(Container.DataItem, "Post_ID")) %>'

answered Oct 23 '10 at 10:58

Etienne

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score 4 · Answer 3 · answered Nov 22 '09 at 18:46

4

Try and ViewSource in your browser, what's being rendered to the client in your href? Is it what you expected?. If you are trying to use variables from the request collection you can't use Eval, you need to use the Request query string parameters.

<asp:HyperLink runat="server"
     NavigateUrl='<%# String.Format("~/Refuse.aspx?type={0}&id={1}", Request["type"], Request["id"]) %>' Text="Refuse" />

answered Nov 22 '09 at 18:46

Phaedrus

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Next is being rendered: Refuse. Thanks for tip. I used it. The same result.. – abatishchev Nov 22 '09 at 18:50
1

Are you trying to use values from the query string? Did you try and use Request["id"] instead of Eval("id")? – Phaedrus Nov 22 '09 at 18:54
1

Try adding Page.DataBind() to your Page_Load. – Phaedrus Nov 22 '09 at 18:57
I tried this myself, it worked. Make sure you have valid data in your query string parameters. – Phaedrus Nov 22 '09 at 19:00
@Phaedrus where he is using the hyperlink within a datalist,gridview or the page – ACP Nov 22 '09 at 19:03
I already understood that I have to use Request["id"]. I do this. And current url where I'm testing is /Approve.aspx?type=request_exchange&id=2 a page loads a control without any GridView or other Views – abatishchev Nov 22 '09 at 19:06
(string)Eval("type") works only after this.DataBind() on Page_Load(). It works but it sucks :) – abatishchev Nov 22 '09 at 19:13

score -1 · Answer 4 · edited Oct 21 '10 at 12:04

-1

Try this one:

<asp:HyperLink ID="HyperLink2" runat="server" onclick='<%# String.Format("AcceptUser({0},{1})",Eval("UserId"), Eval("TsId")) %>' NavigateUrl="javascript:void(0)" Visible='<%# (bool)Eval("CanDelete") %>'>Accept</asp:HyperLink>

edited Oct 21 '10 at 12:04

abatishchev

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answered Nov 22 '09 at 18:52

ACP

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score -1 · Answer 5 · edited Oct 21 '10 at 12:04

-1

Try this:

HttpUtility.UrlEncode(Eval("type")

edited Oct 21 '10 at 12:04

abatishchev

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answered Nov 22 '09 at 18:55

ACP

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score -1 · Answer 6 · edited Oct 21 '10 at 12:05

-1

Try this it worked for me:

Eval("type").ToString()

edited Oct 21 '10 at 12:05

abatishchev

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answered Nov 22 '09 at 19:22

ACP

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HyperLink with NavigateUrl with Eval(). Where is the mistake?

6 Answers6

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