Thank you for contacting us with your concerns. I will be happy to assist you.
You can access the visible rows after a filtering operation by accessing the ChildRows
collection of the desired template.
I hope that the provided information addresses your question. Should you have any other inquiries, do not hesitate to contact us.
the Telerik team
Q2’11 SP1 of RadControls for WinForms is available for download (see what's new); also available is the Q3'11 Roadmap for Telerik Windows Forms controls.