How to use button control in datalist

<asp:datalist id="dlstProducts" runat="server" repeatcolumns="3" cellspacing="5" repeatdirection="Horizontal" repeatlayout="Table" onitemcommand="dlstProducts_ItemCommand">
<itemtemplate>
  <asp:button id="btnDetails" runat="server" commandname="Details" cssclass="RepeaterDetails" text="Details" commandargument="<%# Eval("ID") %>"></asp:button>
</itemtemplate>
</asp:datalist>

protected void dlstProducts_ItemCommand(object source, DataListCommandEventArgs e)
{
   if (e.CommandName == "Details")
     {
       string value = (string)e.CommandArgument;
     }
}