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);
}
}