EF Core one to one to zero relationship not returning data in result

EF Code-First One-to-one relationship: Multiplicity is not valid in Role * in relationship

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Migrating data when adding one-to-one relationship in EF Core?

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One to One Relationship with Different Primary Key in EF 6.1 Code First

one-to-one... a connection with an explicit FK attribute (such as your...PayGroup.SupervisorId... () is not accepted....Take that property out of the model, then:...public class PayGroup { public int Id { get; set; } public virtual Employee Supervisor { get; set; } } ...and use the following fluent mapping:...modelBuilder.Entity<PayGroup>()...

EF Core one-to-zero relationship one way

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How to save data in a one to zero or one relationship with Entity Framework

In the InvoiceSale Entity, add the Foreignkey... public class InvoiceSale { public int Id { get; set; } public int BudgetId { get; set; } public int NumberInvoice { get; set; } public DateTime InvoiceSaleDate { get; set; } public Budget Budget { get; set; } } [HttpPost] public ActionResult...

Entity Framework Core zero-or-one to zero-or-one relation

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EF Core One to One or Zero Relationship

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Why is EF core one-to-one relationship not working as expected?

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EF Can't update one-to-zero or one relationship fields, but updates the rest

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One-way one-to-one relationship with EF Core

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