Entity Framework – NotMapped Attribute

If you include a property in the model,EF will attempt to read/write value from/to the database. In case if we want to exclude a property from the model,we just have to set it without a getter or setter.However there is another convenient/right way to do so by using Data Annotations attribute [NotMapped] which is located in System.ComponentModel.DataAnnotations

public class Company
   public int CompanyId { get; set; }
   public string CompanyName{ get; set; } 

   public DateTime EstablishedDate { get; set; }

Another approach is to use Fluent API as shown below

class ExampleContext : DbContext
        public DbSet<Company> Companies{ get; set; }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
                // here we ignore EstablishedDate from creating
.Ignore(b => b.EstablishedDate);

Cavab yaz

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