How to use c# code inside <% … %> tags on asp.net page?

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I\'m writing an asp.net user control. It has a property, FurtherReadingPage, and two controls bound to it: ObjectDataSource and a Repeater. Inside the Repeater I would like

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星月不相逢

2020-12-31 13:41

Try this (example as link): <a href='<%=FurtherReadingPage %>?id=<%# Eval("Id") %>'>My link</a>

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梦毁少年i

2020-12-31 13:47
You have a couple of different tags:

<% executes the code inside:
```
<% int id = int.Parse(Request["id"]); %> 
```
<%= writes out the code inside:
```
<%=id %> 


<% Response.Write(id); %> 
```
Both of these break up the normal flow when rendered on a page, for instance if you use them in a normal Asp.net <head runat="server"> you'll get problems.

<%# databinding:
```
<%# Eval("id") %>
```
This allows you to specify the bindings for controls that Asp.net WebForms render as a collection (rather than the literal controls that you can use <%= with), for instance:
```

<asp:Hyperlink runat="server" ID="demo" 
     NavigateUrl="page.aspx?id=<%# Eval("id") %>" />

<%  //without this bind the <%# will be ignored
    void Page_Load( object sender, EventArgs e ) {
        demo.DataBind(); 
        //or
        repeaterWithManyLinks.DataBind(); 
    } 
%>
```
For your specific case you either:
- Use a repeater and <%# Eval(...) %> with repeater.DataBind();
or
- Use a foreach loop (<% foreach(... %>) with <%= ... %>
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小蘑菇

2020-12-31 13:47
Try this:
```
<%#String.Format("{0}?id={1}",FurtherReadingPage, Id)%>
```
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故里飘歌

2020-12-31 14:02

You can do it like this -

<asp:Hyperlink runat="Server" ID="hlLink" NavigateUrl='<%# FurtherReadingPage + "?Id=" + DataBinder.Eval(Container.DataItem, "Id")  %>' />

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