use javascript method
function FunctionName (s,e)
{
////Make visible false those controls you don't want to see in print
Window.Print();
////Make Visible true those control again
}
For Example :-
function printdata() {
imgPrint.SetVisible(false);
imgBtnNew.SetVisible(false);
window.print();
imgPrint.SetVisible(true);
imgBtnNew.SetVisible(true);
}