[entity framework core] Entity Framework Core Type Configuration

https://www.learnentityframeworkcore.com/configuration/fluent-api/type-configuration

how to use?

protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity(typeof(EntityName))...
    }

protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity("EntityName")...
    }

protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
       modelBuilder.Entity<EntityName>()...
    }

method	des
HasAlternateKey	Generates a unique constraint for the specified property or properties
HasAnnotation	Provides a means to apply annotations via the Fluent API
HasBaseType	Specifies the base type of the entity
HasIndex	Generates an index on the specified property or properties
HasKey	Denotes the specified property as the entity key
HasMany	Specifies the Many end of a relationship
HasOne	Specifies the One end of a relationship
Ignore	Denotes that the entity should be omitted from mapping
ToTable	Specifies the database table that the entity should be mapped to
Property	Provides access to property configuration

example

public class SampleContext : DbContext
    {
        public DbSet<Order> Orders { get; set; }
        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            modelBuilder.Entity<Order>()
                .HasKey(o => o.OrderNumber);
        }
    }
    public class Order
    {
        public int OrderNumber { get; set; }
        public DateTime DateCreated { get; set; }
        public Customer Customer { get; set; }
        ...
    )

public class SampleContext : DbContext
{
    public DbSet<Order> Orders { get; set; }
    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<Order>()
            .HasKey(o => new { o.CustomerAbbreviation, o.OrderNumber });
    }
}