IgnoreDataMember .NET Core Web Api

When applied to the member of a type, specifies that the member is not part of a data contract and is not serialized.

public class PersonViewModel
{
     public int Id { get; set; }
     public string Name { get; set; }
     [IgnoreDataMember]
     public int Car_Id { get; set; }
}

The following request would suffice when using a PUT statement to update the record:

{
  "Id": 1,
  "Name": "Bob"
}

You can fill the id later on in the controller and still maintain one viewmodel.

In my case I had to fill the id from a user claim which was not exposed to the frontend.

Cheers!