Datepicker in MVC

Hi! I am new to MVC and scripts. I created an MVC application and now I have to add a date picker in that. I tried to use the datepicker function in jquery-ui-1.8.11.js file and applied like this:
<script type="text/javascript" language="javascript" src="~/Scripts/jquery-ui-1.8.11.js"> </script> but while running this it gives error like: JavaScript runtime error: 'jQuery' is undefined and it redirects me to  < ...