C# ListView Delete Items With Condition

[Yof Raja]

Sorry for posting in Java forum, I couldn't find C# forum over here.

I've created a ListView1 in C#

This ListView1 contains the columns: Student, DOB and Location.

There are different groups. Each student is grouped together with other students sharing the same age group.

The DOB field is in date format representing date of birth of each student.

Student DOB       Location

Group1:
AAA     10-05-2000  Mumbai
BBB     05-02-2000  Pune
CCC     01-01-2000  Delhi

Group2:
DDD     20-03-1999  Lucknow
EEE     15-06-1999  Chennai
FFF     18-09-1999  Ahmedabad


Can you please help me with the Code to automatically delete all items except the youngest student in each of the groups (by comparing DOB)?

Thanks a lot in advance.  

[Sherin Mathew]

By this logic you can remove items except the youngest one::

var studentList = new List<Tuple<string, DateTime, string>>();
		studentList.Add(new Tuple<string, DateTime, string>("AAA", new DateTime(2000, 05, 10).Date, "Mumbai"));
		studentList.Add(new Tuple<string, DateTime, string>("BBB", new DateTime(2000, 02, 05).Date, "Pune "));
		studentList.Add(new Tuple<string, DateTime, string>("CCC", new DateTime(2000, 01, 01).Date, "Delhi"));
		
		var younger = studentList.OrderByDescending(x => x.Item2).LastOrDefault();	
		studentList.RemoveAll(x=>x!=younger);
		foreach(var item in studentList)
		{
			Console.WriteLine(item);
		}