Изменить размер массива

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Изменить_размер_массива
{
    class Program
    {
        static void ShowArray(int[,] arrNums)
        {
            for (int intC = 0; intC < arrNums.GetLength(0); intC++)
            {
                for (int intB = 0; intB <arrNums.GetLength(1); intB++)
                    Console.Write(arrNums[intC, intB] + " ");
                Console.WriteLine();
            }
        }
        static int[,] ResizeArray(int[,] arrNums, int[] arrSizes)
        {
            int[,] arrTemp = new int[arrSizes[0], arrSizes[1]];
            for (int intC = 0; intC < (Math.Min(arrNums.GetLength(0), arrSizes[0])); intC++)
                for (int intB = 0; intB < (Math.Min(arrNums.GetLength(1), arrSizes[1])); intB++)
                    arrTemp[intC, intB] = arrNums[intC, intB];
            return arrTemp;
        }
        static void Main(string[] args)
        {
            int[,] arrZ = { { 1, 2, 3, 4, 5, 6 }, { 7, 8, 9, 10, 11, 12 } };
            arrZ = ResizeArray(arrZ, new int[] { 4, 3});
            ShowArray(arrZ);
            }
    }
}