insert a generic colection into database with linq to entity

class Sellprod
{
    public int IDStuff { set; get; }
    public string namestuff { set; get; }
    public int Number { set; get; }
    public Int64 OncePrice { set; get; }
    public int Discount { set; get; }
    public Int64 Sellmultipleprice { set; get; }

}

IDsell	int	Unchecked
IDDocSell	int	Unchecked
IDStuff	int	Unchecked
Number	int	Unchecked
SellPrice	bigint	Unchecked
Discount	bigint	Unchecked
SellMultiplePrice	bigint	Unchecked
		Unchecked

foreach (var item in cpl)
{
TblSellProducts tsp = new TblSellProducts()
{
    // add field
};
context.TblSellProducts.AddObject(tsp);
}