LINQ Find matching rows from two datables and copy to results to new datatable

Perfect, so it is working and you can close the topic by:
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we prefer on having scoped 1 toic = 1 case, as researchers can find more easy a solution mapping to their case. But quick answerred:

  • in general yes, we can do with some LINQ techniques.
  • on selected cases we can also use other options

An introduction to the different options you can check here:
How to Update Data Column Values of a Data Table | Community Blog