troubleshooting Question

Finding Duplicate rows in a datatable to mark as duplicate and have to append the duplicate row in new datatable

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zillion_kamesh asked on
Visual Basic.NET
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Am using vb.net windows application
I have imported 50K rows from a CSV file to a datatable.  There may be some duplicate rows. I have one column "ISDUP" in the same datatable. i have to update the ISDUP column with True or False based on Duplicate row or not. When i find duplicate row i have to append the duplicate row in another datatable.

Here, the performence is most important thing.

Please provide the solution for this Problem.
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