// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002177/array-blockcopy

​

// @nuget: Z.ExtensionMethods

​

using System;

​

public class Program

{

    public static void Main()

    {

        const int INT_SIZE = 4;

        int[] sourceArray = { 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 };

         // Displays the values of the Array.

        Console.WriteLine( "Original values:" );

        PrintValues(sourceArray);

​

        // C# Extension Method: Buffer - BlockCopy

        sourceArray.BlockCopy(3 * INT_SIZE, sourceArray, 0 * INT_SIZE, 4 * INT_SIZE);

​

        Console.WriteLine( "Values after calling BlockCopy method:" );

        PrintValues(sourceArray);

    }

    public static void PrintValues(Array myArr)

    {

        int i = 0;

        int cols = myArr.GetLength(myArr.Rank - 1);

        foreach (object o in myArr)

        {

            if ( i < cols )

            {

                i++;

            }

            else

            {

                Console.WriteLine();

                i = 1;

            }

            Console.Write( "\t{0}", o);

        }

        Console.WriteLine();

    }

}