Server tag is not well formed

Question

I get this message on this line below:

<asp:LinkButton ID="someID" CommandArgument="<%# Eval("ID") %>"
                OnClick="someEvent_Click"
                runat="server">some text</asp:LinkButton>

It does not like, that I put Eval into CommandArgument. What's wrong here?

Answer 1

It should look like this, with single quotes:

<asp:LinkButton ID="someID" CommandArgument='<%# Eval("ID") %>' 
    OnClick="someEvent_Click" runat="server">some text</asp:LinkButton>

Answer 2

 <asp:LinkButton ID="someID" CommandArgument="<%# Eval('ID') %>" OnClick="someEvent_Click" runat="server">some text</asp:LinkButton>

Use single a single apostrophe.