Entity Framework auto increment with starting value

Question

I have a entity as follows

[Table(\"ESS_POS_SE_VERSION\")]
public class Version
{
    [Key, Column(\"DETAIL_ID\"), DatabaseGenerated(DatabaseGeneratedOption.         


        

Answer 1

Consider creating a custom database initializer. It will be called each time your database is created or recreated.

For example:

public class MyInitializer : DropCreateDatabaseIfModelChanges<TContext> where TContext : DbContext
{
    protected override void Seed(TContext context)
    {
        context.Database.ExecuteSqlCommand("DBCC CHECKIDENT('MyTable', RESEED, 1000);");
    }
}

Then register it:

protected void Application_Start()
{
    Database.SetInitializer<MyContext>(new MyInitializer());
}

Answer 2

There is no way to set through Property or Attribute. However, you can run the command on this event:

Probably you can set through Alter: ALTER TABLE [MyTable] ALTER COLUMN [IdentityColumn] IDENTITY (1000,1).

protected override void OnModelCreating(DbModelBuilder modelBuilder)
    { context.Database.ExecuteSqlCommand(ALTER TABLE [MyTable] ALTER COLUMN [IdentityColumn] IDENTITY (1000,1)) }

Answer 3

context.Database.ExecuteSqlCommand("ALTER TABLE Version ALTER COLUMN DETAIL_ID IDENTITY (1000,1)");