using System.ComponentModel.DataAnnotations.Schema; using Microsoft.EntityFrameworkCore; namespace ASC.Core.Common.EF.Model { [Table("files_converts")] public class FilesConverts { public string Input { get; set; } public string Ouput { get; set; } } public static class FilesConvertsExtension { public static ModelBuilder AddFilesConverts(this ModelBuilder modelBuilder) { modelBuilder.Entity() .HasKey(c => new { c.Input, c.Ouput }); return modelBuilder; } } }