Csharp/CSharp Tutorial/Data Structure/Array Copy

Copy an array

using System;  
  
class MainClass {     
  public static void Main() {     
    int[] source = { 21, 22, 23, 24, 25 }; 
    int[] target = { 11, 12, 13, 14, 15 }; 
    int[] source2 = { -1, -2, -3, -4, -5 }; 
 
    Array.Copy(source, target, source.Length); 
 
    Console.Write("target after copy:  "); 
    foreach(int i in target)  
      Console.Write(i + " "); 
    Console.WriteLine(); 
 
  } 
}

target after copy:  21 22 23 24 25

Copy an array: Copy into middle of target

using System;  
  
class MainClass {     
  public static void Main() {     
    int[] source = { 1, 2, 3, 4, 5 }; 
    int[] target = { 11, 12, 13, 14, 15 }; 
    int[] source2 = { -1, -2, -3, -4, -5 }; 
 
    Array.Copy(source2, 2, target, 3, 2); 
 
    Console.Write("target after copy:  "); 
    foreach(int i in target)  
      Console.Write(i + " "); 
    Console.WriteLine(); 
 
  } 
}

target after copy:  11 12 13 -3 -4

Copying elements between arrays

using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Text;

public class MainClass
{
    public static void Main()
    {
        int[] srcArray = new int[] { 1, 2, 3 };
        int[] destArray = new int[] { 4, 5, 6, 7, 8, 9 };
        Array.Copy(srcArray, destArray, srcArray.Length);
        srcArray.CopyTo(destArray, 0);
        srcArray.CopyTo(destArray, 3);
        Array.Copy(srcArray, 0, destArray, 2, srcArray.Length);
    }
}