placing a variable in href

[wvdba]

hi.
i have this href within a repeater control:

<td>
    <a id="Anchor1"  href="Page.aspx?uid=?????????" runat="server">  
           </a>
</td>
<td><%#Container.DataItem("user_id")%></td>
<td><%#Container.DataItem("last_name")%></td>
<td><%#Container.DataItem("first_name")%></td>
<td><%#Container.DataItem("middle_name")%></td>

i'm trying to put Container.DataItem("user_id") where the ??????? is
in classic isp i would use <%response.write user_id%>
but vb.net is different and i can't figure out what code to use.
any suggestions would be appreciated.

 

[jmeckley]

try

href='Page.aspx?uid=<%=Container.DataItem("user_id")%>'

since you are treating it as a server control this may also work

href='Page.aspx?uid=<%#Container.DataItem("user_id")%>'

Jason Meckley
Programmer

faq855-7190
faq732-7259

 

[wvdba]

thanks.
none of those worked.

 

[jmeckley]

care to elaborate?

you could also do this

<a href='<%=string.Format("Page.aspx?uid={0}", Container.DataItem("user_id"))%>'>click me</a>

note the use of single quotes, not double quotes.

Jason Meckley
Programmer

faq855-7190
faq732-7259

 

[wvdba]

i need to use vb.net.
it didn't still work.
when you hover over the href. it shows this at the status bar. the user id is 100756
where as it should show the user id not the code.
Home.aspx?uid=<%#Container.DataItem("user_id")%>
when you hover over the href it should show this:
Home.aspx?uid=100756

 

[jmeckley]

post your code, chances are there is a subtle difference between what i posted and what you wrote.

did you try the 3rd option of string.format?

Jason Meckley
Programmer

faq855-7190
faq732-7259

 

[wvdba]

thanks so much.
what i'm trying to find out what is the equivalent of
<%response.write%> in vb.net
if you put anything in the href tag, it's going to treat it as a literal - not variable. the only way it will be treated as a variable, is to write out with response.write.
here's my code:

<a id="Anchor1"  href="Home.aspx?oid=<%#Container.DataItem('offender_id_display')%>"  runat="server">  
      <%#Container.DataItem("offender_id_display")%>  
    </a>

thanks.

 

[jmeckley]

this should work

href='Home.aspx?oid=<%=Container.DataItem("offender_id_display")%>'

you need to use single quotes and = instead of #. That's the way I have do this in the past.

you're other option is to replace the html tag with a webforms control tag.

<asp:HyperLink ID="mylink" runat="server" Text="Click Me" NavigateUrl='Home.aspx?oid=<%=Container.DataItem("offender_id_display")%>' EnableViewState="false" />

Jason Meckley
Programmer

faq855-7190
faq732-7259

 

[wvdba]

the first one gives this error:
Line 186: href='Home.aspx?oid=<%=Container.DataItem("offender_id_display")%>'</a>

Compiler Error Message: BC30469: Reference to a non-shared member requires an object reference.

and the second one.
displays the CODE -
<%=Container.DataItem("offender_id_display")%>
when you hover over the link.
it's supposed to display the actual value of the variable.

 

[jmeckley]

final attempt

<asp:HyperLink ID="mylink" runat="server" Text="Click Me" NavigateUrl='Home.aspx?oid=<%#Container.DataItem("offender_id_display")%>' EnableViewState="false" />

Jason Meckley
Programmer

faq855-7190
faq732-7259

 

[wvdba]

still no joy.
"click me" is showing up in blue - as a link.
when you hover over the link, it displays:
Home.aspx?oid=<%#Container.DataItem("offender_id_display")%>
instead of the actual value of the variable.
i tried response.write with a constant:
response.write("123456") and it worked
but when "123456" is replaced with a variable like a repeater control item
Container.DataItem("offender_id_display")
it doesn't work.

 

[wvdba]

ok.
i found the correct syntax and it worked perfectly:

<a href='<%# "Home.aspx?oid=" + Cstr(Databinder.Eval(Container.DataItem, "offender_id_display"))%>'>
    <%#Container.DataItem("offender_id_display")%>
  </a>

as customary, i put the solution here so that others can see what the solution is.
thanks much.

 

[ca8msm]

There are a couple of ways of doing this:

1. Use a HTML anchor element i.e. without the runat="server" tag and use the format <%#DataBinder.Eval(Container.DataItem, "MyIDColumn")%> in the href tag

2. Use a Hyperlink control, and use the ItemDataBound event to find the control and set it's value e.g.

Dim h As HyperLink = e.Item.FindControl("MyHyperlinkControl")
h.NavigateUrl = "~/mypage.aspx?id=" & e.Item.DataItem("MyIDColumn")

Mark,

Darlington Web Design[tab]|[tab]Experts, Information, Ideas & Knowledge[tab]|[tab]ASP.NET Tips & Tricks

 

[wvdba]

thanks everybody. i got the link to work ok and it's linking to home.aspx. basically what i want to do in home.aspx is to write out the passed variable (oid) and do some other processing.
i'm using the following code:

sub Page_Load
        Dim x As String
        x = Request.Form("oid")
        Response.Write("oid=" & x)

        '.....some other processes
        
End Sub

 

[ca8msm]

If your are passing the value through in the URL, you will need to use Request.QueryString instead of Request.Form

Mark,

Darlington Web Design[tab]|[tab]Experts, Information, Ideas & Knowledge[tab]|[tab]ASP.NET Tips & Tricks

 

[wvdba]

i'm passing it through the URL as you can see from previous posts.
ok. it worked with request.querystring("oid") as in classic asp.
it also works with request("oid")
is there any difference?
which one should i use?
thanks again for all the help

 

[ca8msm]

You should use Request.QueryString. Using just Request will scan both the Form and QueryString collections.

Mark,

Darlington Web Design[tab]|[tab]Experts, Information, Ideas & Knowledge[tab]|[tab]ASP.NET Tips & Tricks

 

[wvdba]

thanks mark.
i revised the code and just put Request.QueryString
it works perfectly.