EF Core 'another instance is already being tracked'

Question

I have a problem updating an entity in .Net Core 2.2.0 using EF Core 2.2.3.

An error occurred while saving changes. Error details: The instance of

Answer 1

So, in the end we ended up using a custom UpdateEntity method to save our changes on some entities. This method goes through each property, navigation property and collection property of an entity, makes sure there is no chain and updates the objects a single time.

It works for big objects and we only use it in those cases. For simple operations we keep using the simple Update

Here is the link to a bitbucket repository with the source code

In order to use this method, you will have to get the db entity first. Then call UpdateEntity method with the db entity and your entity received by the request.

I hope it helps you as it helped me. Cheers!