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change tracking

EF Core remembering which loaded objects you changed, so it knows what to save.

The change tracker records entity states (Added, Unchanged, Modified, Deleted) for tracked entities; SaveChanges generates commands for them. AsNoTracking skips tracking for read-only queries.

Examples

  • Load an order, set order.Status = "Shipped", call SaveChanges(), and EF Core sends one UPDATE for that column.

See also

DbContext unit of work
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