Fetch calendar date in text box using Asp webfrom

<asp:Calendar ID="Calendar1" runat="server" BackColor="#FFFFCC" BorderColor="#FFCC66" BorderWidth="1px" DayNameFormat="Shortest" Font-Names="Verdana" Font-Size="8pt" ForeColor="#663399" Height="200px" OnSelectionChanged="Calendar1_SelectionChanged" ShowGridLines="True" Width="220px">

<DayHeaderStyle BackColor="#FFCC66" Font-Bold="True" Height="1px" />

<NextPrevStyle Font-Size="9pt" ForeColor="#FFFFCC" />

<OtherMonthDayStyle ForeColor="#CC9966" />

<SelectedDayStyle BackColor="#CCCCFF" Font-Bold="True" />

<SelectorStyle BackColor="#FFCC66" />

<TitleStyle BackColor="#990000" Font-Bold="True" Font-Size="9pt" ForeColor="#FFFFCC" />

<TodayDayStyle BackColor="#FFCC66" ForeColor="White" />

</asp:Calendar>

<br />

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

protected void Calendar1_SelectionChanged(object sender, EventArgs e)

{

TextBox1.Text = Calendar1.SelectedDate.Date.ToString("dd/MM/yyyy");

}