Using List Of Custom Class Object As Data Source For Crystal Report

I am trying to find way to design a report using my own custom class. I found links:

1.) How to work in Crystal Report with Object Data Source?

2.) Use .net object as data source in Crystal Report 2008

3.) Binding object with List<> to Crystal Report

4.) How to assign Custom class as datasource in crystal report

They were quite helpful, but I have been stuck in the first step while designing report as my custom class's property is not listed in field list of crystal report design view.[code]When I add my class objects to crystal report I do not get the usertype field from users class in field list.So how can I add usertype field to my field list? Or do I have to take another approach?The reason i wanted to use it as i am:

1.) Showing a form where user can type keyword
2.) program filters the records as per keyword using LINQ
3.) when user clicks the print button, I want to set the filtered records as datasource of my report