How To Copy A C# List

The CopyTo method copies a List into a one-dimensional array.  CopyTo can also copy a partial list or a number of items form a list to another collection. The following code copies a 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);  
            }  
        }  
    }  
}  

In the above code, the first CopyTo copies the entire list. The second CopyTo method copies all items starting at index 4 and the third CopyTo method copies a partial list.

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

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