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+1  Q: 

Remove record from a datatable when record disappears from a mirrored datatable

I have two mirrored datatables (same structure with two primary keys) :

  • DataTable_A ---> bound to a datagridView
  • DataTable_B ---> filled from a database

Since DataTable_B is filled by a query into database every 2 seconds, I need to mirror the DataTable_A like DataTable_B avoiding filling directly DataTable_A. When a record disappears from DataTable_B i need to delete the record also from DataTable_A. What is the best way to do this ?

Right now I am doing a "for cycle" on each row of DataTable_B and if the row doesn't exist on DataTable_A, I delete it.

Is there a better way to do it ?

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