Use inline Request.QueryString to build url

Question

Not sure if I'm asking this right, but I have this:

<a href="mypage.aspx?id=<% Request.QueryString["id"].ToString(); %>&sec=map">
    Map
</a>

But it doesn't add the ID to the url query string. Not sure what to do cause I really don't want to have to make a bunch of literals to build this on code side.

The url I get is:

mypage.aspx?id=&sec=map

just edited with the url it gives me, basically the "id" query string is blank — Andres
– Andres, Commented Aug 22, 2014 at 16:24
Can you put a breakpoint in that section, see what the method returns? — gunr2171
– gunr2171, Commented Aug 22, 2014 at 16:24
First, try the easiest, replace the double-quotes of href by single-quotes. — Kevin Le - Khnle
– Kevin Le - Khnle, Commented Aug 22, 2014 at 16:28

Community · Accepted Answer · 2017-05-23 12:21:22Z

5

You need an = after the <% otherwise the value is not written out. You will then need to remove the semi-colon as well:

<a href="mypage.aspx?id=<%= Request.QueryString["id"].ToString() %>&sec=map">
    Map
</a>

See this question for more details on the various meanings of <%.

edited May 23, 2017 at 12:21

CommunityBot

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answered Aug 22, 2014 at 16:30

petelids

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