ASP.NET Calendar - Date picker synchronized with textbox

Click on the calendar image near the textbox and select a date.
Change the date inside the textbox using format dd/MM/yyyy.
The calendar date will synchronize with the new data.

    Select date

ASP.NET

<ASP:TextBox runat="server" ID="txtDate"></ASP:TextBox>

<obout:Calendar runat="server"
                         DatePickerMode="true"
                         TextBoxId="txtDate"
                         DatePickerSynchronize="true">
</obout:Calendar>