<!DOCTYPE html>
<html>
<body>
<form runat="server">
<p>RepeatLayout is set to Table</p>
<asp:CheckBoxList id="cb1" runat="server">
   <asp:ListItem Value="Item 1" />
   <asp:ListItem Value="Item 2" />
   <asp:ListItem Value="Item 3" />
   <asp:ListItem Value="Item 4" />
</asp:CheckBoxList>

<p>RepeatLayout is set to Flow</p>
<asp:CheckBoxList id="cb2" runat="server" RepeatLayout="Flow">
   <asp:ListItem Value="Item 1" />
   <asp:ListItem Value="Item 2" />
   <asp:ListItem Value="Item 3" />
   <asp:ListItem Value="Item 4" />
</asp:CheckBoxList>
</form>
</body>
</html>