gridview builder height dynamic

[fakhravari]

سلام
چطوری میتونم ارتفاع با بزرگترین ایتم set کنم؟
GridView.builder( gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2),
padding: const EdgeInsets.only(top: 0),
itemCount: _products.length,
controller: _sc,
itemBuilder: (BuildContext context, int index) {
return ProductCard(_products[index]);
})

دیتیل نمایش
Widget ProductCard(GetListProductMobileSearch model) { return Container(
child: Card(
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(5)),
color: Env.ColorWhite,
child: Column(
children: <Widget>[
Container(
child: CachedNetworkImage(
imageUrl: model.image,
height: 140,
width: double.infinity,
fit: BoxFit.fill,
placeholder: (context, url) => Image.asset(
'assets/images/icon.png',
height: 130,
width: double.infinity,
fit: BoxFit.fill,
)),
),
Container(
child: Padding(
padding: const EdgeInsets.all(5.0),
child: Column(
children: [
Text(model.nameEn,
textAlign: TextAlign.left,
style: TextStyle(
fontSize: 12,
color: Colors.black,
fontWeight: FontWeight.normal,
fontFamily: "Roboto-Medium")),
Padding(
padding: const EdgeInsets.only(top: 10),
child: Text(model.nameFa,
textAlign: TextAlign.right,
style: TextStyle(
fontSize: 12,
color: Colors.black,
fontWeight: FontWeight.normal,
fontFamily: "IRANSansMobile_Bold")),
)
],
),
),
),
Container(
child: Expanded(
child: Align(
child: Text(
(model.totalPrice / 10).toString().FormatNumber() + " تومان",
style: Theme.of(context).textTheme.headline1.copyWith(
color: Color(0x1d89e4).withOpacity(1.0),
fontWeight: FontWeight.w700)),
alignment: Alignment.center,
))),
],
),
),
);
}