Applying a style to lists via code behind

Hi
I've managed to change the style of a list via code behind by adding a string with a class statement to a literal control, but I'm sure my approach is not ideal.
<li <asp:Literal ID="Literal_Css" runat="server"></asp:Literal>> <asp:HyperLink ID="HyperLink_Duty" runat="server"></asp:HyperLink> </li> Is there a better way?
Thansk as always