C# - How To Format A Timespan String

Feb 18, 2011

In the code i have :

gvRankings.DataSource = rankings.OrderBy(rg => rg.Swimtime).Take(100).ToArray();
(Swimtime here is a timespan)

At the frontside i have

< asp:TemplateField HeaderText="Tijd" ItemStyle-CssClass="time" HeaderStyle-CssClass="smallheader">
< ItemTemplate><%# ("Swimtime")%>< /ItemTemplate>
< /asp:TemplateField>

I would like to format the swimtime like hh:mm:dd.ff but i have (after 2 hours of trying) absolutely no idea how to do this.....

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