Hi Allon,
Thanks for your interest in Syncfusion Products.
In Syncfusion gridcontrol, the selected ranges in grid can be retrieved through the Selections.Ranges method.
Please refer to the following sample, in which the selected ranges in can get displayed in listbox on pressing button.
http://files.syncfusion.com/support/samples/Grid.Windows/7.3.0.20/F89385.zipRegards,
Rajadurai