New Post: Customize WPF DataGrid Filtering application for Prism-MEf

Hi Prism Experts,
I tried several times, again and again to customize the code in this application http://jibgridwpf.codeplex.com/
to use it with my MVVM-Prism-MEF LOB application where my DataGrid reside in the view and its columns generated manually and its ItemsSource is observableCollection in ViewModel, ...

I added all classes into a folder called Filter in my Infrastructure layer to be available to all DataGrids in all Modules
The modifications i did are:

1-i added the code to the common / Infrastructure layer
2-i added ColumnFilterControl in my DataGridStyle.xaml file in DataGridColumnHeader and i use this
  style for all my grids so ColumnFilterControl  will appear automatically in column headers
3-i merged JibGrid.xaml code into my DataGridStyle.xaml so no DataGridStyle.xaml file any more
                 (note: i can't use JibGrid as it is in my application because i need to build my DataGrid manually
                  in the View and add CRUD processes in view model, ....)
4-i used JibGrid.xaml.cs as stand alone class which will be referenced in my View Model and the 
   View Model will delegate the requests to it then it will handle them as it did in the original
       application

i'm trying for days, but i couldn't get it running so please i need your help to customize this code as you did in many other
situations before.
Thanks in advance.