Hi SUJAYS,

Refer below link.

Using jQuery DatePicker with Content Page along with Master Page in ASP.Net

Its now working As I have implemented the datepicker

<script type="text/javascript">
    $(document).ready(function () {
        $("#<%=txtDate.ClientID %>").datepicker({ dateFormat: 'dd-mm-yy' });
    });
</script>
<asp:TextBox ID="txtdate" runat="server">