multicolumn listbox in aspx page

I have a list box:

<asp:ListBox ID="lstAppointment" runat="server"></asp:ListBox>

I want to make it multicolumn. I googled a lot but not finding the appropriate answer. I am working in ASP.NET C#.

Any help wou开发者_如何学Pythonld be appreciated.

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I am using Gridview now for this purpose.