public void GetQuantityByProduct()
    {
        Object FillQty = new Object();

        FillQty.Product_Name  = HiddenProductName.Value;
        FillQty.Category_Name = HiddenCatagoryName.Value;
        DataTable dt = BSLAYER.QtyFill(FillQty);

        DdlPacket.DataSource     = dt;
        DdlPacket.DataTextField  = "Product_Quantity";
        DdlPacket.DataValueField = "Product_Quantity";
        DdlPacket.DataBind();
        DdlPacket.Items.Insert(0, "--SORT BY QTY--");
    }