public ActionResult Create(FormCollection input)
    {
        var product = contentManager.New<ProductPart>("Product");
        product.Description = input["Description"];
        product.Sku = input["Sku"];
        product.Price =Convert.ToDecimal(input["Price"]);

        if (!ModelState.IsValid)
        {
            return View(product);
        }

        contentManager.Create(product);

        return RedirectToAction("Index");
    }

public static T New<T>(this IContentManager manager, string contentType)
 where T : class, IContent {
        var contentItem = manager.New(contentType);
        if (contentItem == null)
            return null;

        var part = contentItem.Get<T>();
        if (part == null)
            throw new InvalidCastException();

        return part;
    }

public class ProductRecord:ContentPartRecord
{
   // public virtual int Id { get; set; }


    public virtual string Sku { get; set; }


    public virtual string Description { get; set; }


    public virtual decimal Price { get; set; }


}



public class ProductPart : ContentPart<ProductRecord>
{
    /*
    public int Id
    {
        get { return Record.Id; }
        set{Record.Id = value;}
    }
    */

    [Required]
    public  string Sku
    {
        get { return Record.Sku; }
        set { Record.Sku = value; }
    }

    [Required]
    public  string Description
    {
        get { return Record.Description; }
        set{ Record.Description = value;}
    }

    [Required]
    public  decimal Price
    {
        get { return Record.Price; }
        set { Record.Price = value; }
    }


}

public class Migrations : DataMigrationImpl
{

    public int Create()
    {
        SchemaBuilder.CreateTable("ProductRecord",
            table =>
            {
                table.ContentPartRecord()
                     .Column<string>("Sku")
                     .Column<string>("Description")
                     .column<decimal>("Price");
            });

        ContentDefinitionManager.AlterTypeDefinition("Product", cfg => cfg.WithPart("ProductPart"));

        return 1;
    }
}

public int Create() {
    SchemaBuilder.CreateTable("ProductRecord",
        table => table
            .ContentPartRecord()
            .COLUMNS NEED TO BE SPECIFIED
        );

    ContentDefinitionManager.AlterTypeDefinition("Forum",
        cfg => cfg
            .WithPart("ProductPart")
            .WithPart("CommonPart")
        );