EF Core tries to add new record instead of update 1:many relation

Prevent EF from adding new child objects instead of just association when inserting new parent object?

I have these things:... public int CreateExercise(Exercise newExercise) { db.Exercises.Add(newExercise); db.SaveChanges(); return newExercise.ExerciseId; } ...the following is exercise:...public class Exercise { public Exercise() { Users = new Collection<User>(); } [Key] [Required] publ...

Asp.Net Core EF Core many to many relation update command

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How update entity after adding new entity in EF Core

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How to add a parent record with its children records in EF Core

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Error adding new migration EF Core 2.0 on ASP.Net Core 2.0

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EF Core - adding/updating entity and adding/updating/removing child entities in one request

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EF trying to create new entry instead of relation

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EF Core - Added element of relation isnt being saved by EF

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Using automapper.collection in aspnet core & ef core doesn't updated edited records in a collection

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EF Core is trying to insert a record with an existing primary key

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