Implement jQuery UI DatePicker (Calendar) with ReadOnly TextBox in ASP.Net

Here Mudassar Ahmed Khan has explained with an example, how to implement jQuery UI DatePicker (Calendar) with ASP.Net TextBox with ReadOnly property set to true. When TextBox is set ReadOnly true, its value is not available on Server Side (Code Behind) and hence we need to make use of the Request.Form collection to fetch the value of jQuery DatePicker (Calendar).