Formatting Date Field in Grid View

Due to a bug fix in .NET 2.0, HtmlEncode must be set to False for date formatting to give expected results:

<asp:BoundField DataField="AgendaDate" HeaderText="Agenda Date" SortExpression="AgendaDate" DataFormatString="{0:yyyy-MM-dd}" HtmlEncode=False />

In a Details View using TemplateFields:

<ItemTemplate>
  <asp:Label ID="agendaDateLabel" runat="server" Text='<%# Eval("AgendaDate", "{0:yyyy-MM-dd}") %>'></asp:Label>
</ItemTemplate>