Hi Rui Silva,
Thank you for writing.
Currently, we do not have a PDF Viewer component in the RadControls for WinForms suite. Such a feature request is already made by another user of ours. Feel free to follow this link
, where you can add your vote for this request. Once this request gather more popularity our team will consider the implementation of such a component.
I hope that you find this information helpful. Should you have any other questions or suggestions, do not hesitate to contact us.
the Telerik team