How to reverse a C# List

C# List<T> class provides methods and properties to create a list of objects (classes). You can add items to a list during the initialization or using List.Add() and List.AddRange() methods.

 

List is a generic class. You must import the following namespace before using the List<T> class.

 

using System.Collections.Generic;

 

The Reverse method of List<T> reverses the order all items in in the List.

The following code example reverses a List.

// List of string
List<string> authors = new List<string>(5);
authors.Add("Mahesh Chand");
authors.Add("Chris Love");
authors.Add("Allen O'neill");
authors.Add("Naveen Sharma");
authors.Add("Mahesh Chand");
authors.Add("Monica Rathbun");
authors.Add("David McCarter");

Console.WriteLine("Original List items");
Console.WriteLine("===============");
// Print original order
foreach (string a in authors)
Console.WriteLine(a);

// Reverse list items
authors.Reverse();

Console.WriteLine();
Console.WriteLine("Sorted List items");
Console.WriteLine("===============");
// Print reversed items
foreach (string a in authors)
Console.WriteLine(a);

Listing 1.

The output of Listing 8 looks like Figure 1.

 

 

 

Figure 1.

 

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