html accessing variable value from c# codebehind

I'm trying to access a value from the code behind to create a query string. This is the simplest way I thought of, but if you guys have any recommendations please feel free to give your thoughts:

I have this link that would generate the querystring and would trigger a lightbox to show the page in front of the main page:

<a id="link" runat="server" href="thepage.aspx?id=<%strtest%>">Show the page with strtest</a>

Code behind:

public string strtest = "";
:
string strTestID = Request.QueryString["ID"].ToString();
:
strtest = strTestID ;

At the moment, it would just give me a blank lightbox. If I take out the lightbox and see the url generated, the url looks like this.

thepage.aspx?id=<%strtest%>

So like I said, I did the simplest way I can think of. I also thought of implementing javascript with this

string jsString= "changeLink('" + strtest 开发者_StackOverflow社区 + "');";

But that would give me an error with my parameters which btw is weird as it works without it.

So yeah, any help is appreciated.

You are seeing this behavior because of the 'runat="server"' attribute on the anchor tag. Remove the attribute and the value will be displayed correctly. Also, you will want to change the code from <%strtest%> to <%= strtest%>

I think you want:

<a id="link" href="thepage.aspx?id=<%=strtest%>">Show the page with strtest</a>

In asp.net 4, this is preferable:

<a id="link" href="thepage.aspx?id=<%:strtest%>">Show the page with strtest</a>

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