如何在显示日期时停止在GridView中显示时间？

<asp:BoundField DataField="Date" DataFormatString="{0:dd/MM/yyyy}" HeaderText="Date" />

function formatDate(date) {
    var d = new Date(date),
        month = '' + (d.getMonth() + 1),
        day = '' + d.getDate(),
        year = d.getFullYear();

    if (month.length < 2) month = '0' + month;
    if (day.length < 2) day = '0' + day;

    return [day, month, year].join('/');
}

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
   <Columns>
        <asp:TemplateField HeaderText="Date">
            <ItemTemplate>
                <span data-date="<%# formatDate(Eval("Date")) %>"><%# Eval("Date") %></span>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>