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3 Dropdownlistes in Edit Form

May 24 2013 8:29 AM
I have 3 dropdown list connected to each other for example When selecting the Major the other dropdown list should show the subjects related and the 3rd dropdownlist should retrieve the list of the instrouctors . In the adding form I'm using the Sqldatasource to mape it but now I need to retrieve the selected items in the dropdown list for editing . How can I implement it ?