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C# 10 - Difficulty with Entity Framework Core Tracking Behavior in Detached Entities

👀 Views: 445 💬 Answers: 1 📅 Created: 2025-07-18
entity-framework-core c# ef-core tracking C#

I'm working with an scenario with Entity Framework Core (version 6.0) where I'm trying to update an entity that was previously loaded but is now detached from the context. After re-attaching the entity, I'm using `context.Update(entity)` to mark it for update, but I'm working with an `InvalidOperationException` stating that the entity want to be tracked because it is already tracked. Here’s a simplified version of my code: ```csharp var entity = await context.MyEntities.FindAsync(entityId); context.Entry(entity).State = EntityState.Detached; // Some logic happens here that may modify the entity’s state locally entity.Name = "Updated Name"; context.Update(entity); await context.SaveChangesAsync(); ``` I also tried using `context.Attach(entity)` instead of `context.Update(entity)` but that did not resolve the scenario either. I’ve checked that `entity` is indeed detached and not being tracked by another context instance. What’s the correct approach to update a detached entity in EF Core, especially in a scenario where multiple contexts might be involved? Any insights would be appreciated!