What is the best way to remove duplicates from a datatable?

Question

I have checked the whole site and googled on the net but was unable to find a simple solution to this problem.

I have a datatable which has about 20 columns and 10K

Answer 1

It should be taken into account that Table.AcceptChanges() must be called to complete the deletion. Otherwise deleted row is still present in DataTable with RowState set to Deleted. And Table.Rows.Count is not changed after deletion.