c# - Dragdrop from listbox to listbox in silverlight -

i using listbox bind data coming database, once binding done there listbox have drag , drop contents of first listbox. able drag , drop nothing visible in 2nd listbox(but content moving 1st 2nd listbox). same thing tried hardcoding items in 1st listbox , worked fine. if has experienced similar kind of problem, please help.

make sure you're using observablecollection when dragging , dropping between sources. if used list, listboxes not notified of change in collection.