How To Copy A C# List

C# List<T> class provides methods and properties to create a list of objects (classes).

 

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

using System.Collections.Generic;

The CopyTo method copies a List into a one-dimensional array. The CopyTo method has three overloaded forms.

 

The following code snippet copies the entire list into an Array.

using System;
using System.Collections.Generic;
namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> AuthorList = new List<string>();
            AuthorList.Add("Mahesh Chand");
            AuthorList.Add("Praveen Kumar");
            AuthorList.Add("Raj Kumar");
            AuthorList.Add("Nipun Tomar");
            AuthorList.Add("Dinesh Beniwal");
            AuthorList.Add("Mahesh Chand");
            AuthorList.Add("Praveen Kumar");
            AuthorList.Add("Raj Kumar");
            AuthorList.Add("Nipun Tomar");
            AuthorList.Add("Dinesh Beniwal");
            // Create an array of strings
            string[] authorArray = new string[15];
            // Copy entire List
            AuthorList.CopyTo(authorArray);
            // Copy items starting at index = 4
            AuthorList.CopyTo(authorArray, 4);
            // Copy 4 items starting at index 2 in List and copying
            // to array starting at index 10
            AuthorList.CopyTo(2, authorArray, 3, 4);
            foreach (string author in authorArray)
            {
                Console.WriteLine(author);
            }
        }
    }
}

The output from above code listing is shown in below figure.

 

 

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