IT:AD:Code First:FluentAPI:Properties

Examples: Properties

The following just specify contraints on size, key, etc.

It's done automatically if you the fieldname is called Id or TheEntitityId, but if you can't use that field name:

modelBuilder.Entity<Manager>()
  .HasKey(ma => ma.ManagerCode);

Use an anonymous object:

modelBuilder.Entity<Department>()
  .HasKey(t => new { t.DepartmentID, t.Name });

modelBuilder.Entity<Manager>().Property(ma => ma.Name)
  .HasMaxLength(20);

modelBuilder.Entity<Department>().Property(dp => dp.Name)
  .IsRequired();

You can ignore calculated columns:

modelBuilder.Entity<Department>().Ignore(t => t.Budget);

modelBuilder.Entity<Department>().Property(t => t.Name)
  .HasColumnName("DepartmentName");