compare two datagridview and find different rows

I have 3 datagridviews in C# 2010, two datagridviews used to compare value in a selected column,  if the value (Selected column) in the first datagridview was not found the second datagridview then put the row in the third datagridview.
wuanchuAsked:
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Dirk HaestProject managerCommented:
Do you have a dataset as input for your datagridview ?
http://canlu.blogspot.com/2009/05/how-to-compare-two-datatables-in-adonet.html
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