public partial class ViewGoodsStocksMvc
    {
        public int GoodId { get; set; }
        public string Articul { get; set; }
        public string Widht { get; set; }
        public int Available { get; set; }
        public decimal CurrentPrice { get; set; }
        public string Type { get; set; }
        public string ManufName { get; set; }
        public string NomenclImagePath { get; set; }
        public int LenghtId { get; set; }
        public int TypeId { get; set; }
       
    }
}

 private async Task InitAsync()
    {
        objGoods = await objGoodStockService.GetGoodsAsync(radioItem);
        await InvokeAsync(StateHasChanged);


        List<int> TypeList = null;
        foreach (var t in ObjGoods)
        {
            TypeList.Add(t.TypeId);
        }
        List<int> TypeListGroup = TypeList.Distinct().ToList();
    }

 [Parameter]
        public List<ViewGoodsStocksMvc> ObjGood { get; set; } = null;
        //public List<int> typeGroup = new List<int>();

        public List<int> GetTypeList()
        {

            List<int> TypeList = new List<int>();
            foreach (var t in ObjGood)
            {
                TypeList.Add(t.TypeId);
            }
            List<int> TypeListGroup = TypeList.Distinct().ToList();
            return TypeListGroup;
        }

 public class SelectTypesService
    {
        List<ViewGoodsStocksMvc> goodList ;
        Types type = new Types();
        List<Types> typelist= new List<Types>();
        public List<Types> GetTypes(List<ViewGoodsStocksMvc> _goodList)
        {
            goodList = _goodList;
            foreach (var t in goodList)
            {
                type.TypeId = t.TypeId;
                type.Type = t.Type;
                typelist.Add(type);
            }
            return typelist.Distinct().ToList();
        }