C# .NET 4.0 MVC Inserting a record with primary key

Question

We have a database with a tables called \'Sites\' This table has the columns, SiteID, Name, Tags, Description, URI, with SiteID being a primary key (It is not set as an Iden

Answer 1

If you want a NO IDENTITY primary key column, so you set the id manually, you have 2 possible solutions.

1. Decorate your id propertie with the following Attributes (DatabaseGenerated...).

    public class Sites
    {
        [Required, Key, DatabaseGenerated(DatabaseGeneratedOption.None)]
        public int SiteID { get; set; }
        public string Name { get; set; }
        public string Tags { get; set; }
        public string Description { get; set; }
        public string URI { get; set; }
    }

2. Do it using the ModelBuilder in your DbContext.

    public class CMSModels : DbContext
    {
      //public DbSet<ContentTypeModel> ContentType { get; set; }
      //public DbSet<LayoutModel> Layout { get; set; }
      //public DbSet<PageModel> Page { get; set; }
      //public DbSet<PageZoneModel> PageZone { get; set; }
      public DbSet<Sites> Site { get; set; }
      //public DbSet<ZoneContentModel> ZoneContent { get; set; }
      //public DbSet<ZoneTypeModel> ZoneType { get; set; }

      protected override void OnModelCreating(ModelBuilder modelBuilder)
      {
          base.OnModelCreating(modelBuilder);
          modelBuilder.Entity<Sites>().Property(r => r.SiteID) 
                       .HasDatabaseGeneratedOption(DatabaseGeneratedOption.None);
      }
    }

Answer 2

I think you can understand your problem and solve it reading this article: http://leedumond.com/blog/using-a-guid-as-an-entitykey-in-entity-framework-4/