Maybe you should not be trying to use a general purpose library, they usually are oriented towards business grahics. You can manually do it in WinForms or WPF. Both support drawing lines. In WPF you can use the canvas, and draw lines on the canvas: http://msdn.microsoft.com/en-us/library/ms747393.aspx
]. there should be quite a few resources available on the internet to tell you how to do drawing, either in WinForms or WPF.