How to sort a list in C# with secondary sorting. For example if I have a class called Student with two fields FirstName and LastName. Until now I've sorted the list as follows:
MyStudents.Sort((s1, s2) => s1.LastName.CompareTo(s2.LastName));
I wanted to know how can I sort the list first by last name and then by first name. Thanks.
Sort doesn't have that capability.
Linq can do this simply:
MyStudents.OrderBy(s => s.LastName).ThenBy(s => s.FirstName)
Ensure you are using at least .NET 3.5 and have the System.Linq namespace referenced.
You can use LINQ:
MyStudents.OrderBy(e => e.LastName).ThenBy(e => e.FirstName);
ThenBy not ThanByYou can use OrderBy and ThenBy
var sortedList = MyStudents.OrderBy(s => s.LastName).ThenBy(s=> s.FirstName);
note that OrderBy and ThenBy does not change the order of MyStudents list and they return an IEnumerable<Student>, so if you need a List<Student> use ToList().
