Multiple ListBox Question

I have about 300 times Listbox on page  Listbox_1 - Listbox_ 300  I like to clear the items for all of them like 
ListBox_1.Items.Clear() ............................................ ListBox_300.Items.Clear()
is there a way clear all ListBox in a loop  something like
for Number=1 to 300
 ListBox_ & Number.Items.Clear() 
next
thanks for any suggestion