How to Sort a List<T> by a property in the object

Question

I have a class called Order which has properties such as OrderId, OrderDate, Quantity, and Total. I have a list of this Order class:

List<Order> objListOrder = new List<Order>(); GetOrderList(objListOrder); // fill list of orders 

I want to sort the list based on one property of the Order object; for example, either by the order date or the order id.

How can I do this in C#?

Answer 1

The easiest way I can think of is to use Linq:

List<Order> SortedList = objListOrder.OrderBy(o=>o.OrderDate).ToList(); 

Answer 2

If you need to sort the list in-place then you can use the Sort method, passing a Comparison<T> delegate:

objListOrder.Sort((x, y) => x.OrderDate.CompareTo(y.OrderDate)); 

If you prefer to create a new, sorted sequence rather than sort in-place then you can use LINQ's OrderBy method, as mentioned in the other answers.