How to sort by date flutter app?

How to Sort List of Date String in Ascending Order:

List<String> datestrings = [
  "2021-12-11", 
  "2020-02-12", 
  "2010-01-23",
  "2013-01-14",
];

datestrings.sort((a, b){ //sorting in ascending order
    return DateTime.parse(a).compareTo(DateTime.parse(b));
});

print(datestrings);

//output: [2010-01-23, 2013-01-14, 2020-02-12, 2021-12-11]

How to Sort List of Date String in Descending Order:

List<String> datestrings = [
  "2021-12-11", 
  "2020-02-12", 
  "2010-01-23",
  "2013-01-14",
];

datestrings.sort((a, b){ //sorting in descending order
    return DateTime.parse(b).compareTo(DateTime.parse(a));
});
print(datestrings);

//output: [2021-12-11, 2020-02-12, 2013-01-14, 2010-01-23]
To sort List on Descending order in Dart, just swap the place of "a" and "b"

How to Sort List of DateTime in Ascending Order:

List<DateTime> dates = [
  DateTime.parse("2021-12-11"), 
  DateTime.parse("2020-02-12"), 
  DateTime.parse("2010-01-23"),
];

dates.sort((a, b){ //sorting in ascending order
    return a.compareTo(b);
});
print(dates);

//output: [2010-01-23 00:00:00.000, 2020-02-12 00:00:00.000, 2021-12-11 00:00:00.000]

How to Sort List of DateTime in Descending Order:

List<DateTime> dates = [
  DateTime.parse("2021-12-11"), 
  DateTime.parse("2020-02-12"), 
  DateTime.parse("2010-01-23"),
];

dates.sort((a, b){ //sorting in descending order
    return b.compareTo(a);
});
print(dates);

//output: [2021-12-11 00:00:00.000, 2020-02-12 00:00:00.000, 2010-01-23 00:00:00.000

 Flutter/Dart Code Example:
import 'package:flutter/material.dart';

void main() {
  runApp( MaterialApp(
       home: Home()
  ));
}

class Home extends  StatefulWidget {
  @override
  State<Home> createState() => _HomeState();
}

class _HomeState extends State<Home> {

  @override
  Widget build(BuildContext context) {

    List<String> datestrings = [
      "2021-12-11", 
      "2020-02-12", 
      "2010-01-23",
      "2013-01-14",
    ];

    datestrings.sort((a, b){ //sorting in ascending order
        return DateTime.parse(a).compareTo(DateTime.parse(b));
    });

    return Scaffold(
         appBar: AppBar(
            title: Text("Sorting Dates in Flutter"),
            backgroundColor: Colors.redAccent,
         ),
          body: Container(
             alignment: Alignment.center,
             padding: EdgeInsets.all(20),
             child: Column(
               children:datestrings.map((dateone){
                  return Container(
                    child: Card(
                       child:Container( 
                         width: double.infinity,
                         padding: EdgeInsets.all(15),
                         child: Text(dateone, style: TextStyle(fontSize: 18))),
                       ),
                  );
               }).toList(),
             ),
          )
      );
  }
}

** Output Screenshot:**

## Practical Example