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The property or navigation cannot be added to the entity type because a property or navigation with the same name already exists on entity type

Horrible Hare answered on March 24, 2022 Popularity 5/10 Helpfulness 1/10

answer The property or navigation cannot be added to the entity type because a property or navigation with the same name already exists on entity type

The property or navigation cannot be added to the entity type because a property or navigation with the same name already exists on entity type

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public class Device
{
    [Required]
    [DataMember(Name = "key")]
    [Key]
    public Guid Key { get; set; }


    [ForeignKey("DeviceType")]   
    public Guid DeviceTypeId { get; set; } // I assumed primary key of your `DeviceType` entity is `Guid`

    [ForeignKey("ModelType")]  
    public Guid ModelTypeId { get; set; } // I assumed primary key of your `ModelType` entity is `Guid`


    [IgnoreDataMember]
    public virtual DeviceType DeviceType { get; set; }


    [IgnoreDataMember]
    public virtual ModelType ModelType { get; set; }
}

Popularity 5/10 Helpfulness 1/10 Language whatever

Source: stackoverflow.com

Tags: entity exists navigation whatever

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