Dataset Merge only Update columns not a changed row(Want to Avoid concurrency in table)

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C#

I am using dataAdpter to update the records for that i am using Dataset. User change some in Dataset table after that is go to same if some body has change some Value for some where it gives concurrency error. For avoiding that i am pulling the latest temp dataset and merging the changed dataset it is overriding my temp dataset.

I tried the GetChanges(). but it is filtering changed row.

can i create any dataset set which is having oly change value.

Or suggest me how i can avoid concurrency.