Matrix Shuffling / C# Advanced

using System;
using System.Collections.Generic;
using System.Linq;

namespace TRAINING
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] dimensions = ReadFromTheConsole();

            int rows = int.Parse(dimensions[0]);
            int cols = int.Parse(dimensions[1]);

           string[,] matrix =  FillTheMatrix(rows, cols);

           string command = Console.ReadLine();
           while (command?.ToLower() != "end")
           {
               string[] cmdArr = command.Split(" ", StringSplitOptions.RemoveEmptyEntries);
               try
               {
                   string action = cmdArr[0];
                   int rowIndexFromMatrix = int.Parse(cmdArr[1]);
                   int colIndexFromMatrix = int.Parse(cmdArr[2]);
                   int rowIndexOfItemToSwap = int.Parse(cmdArr[3]);
                   int colIndexOfItemToSwap = int.Parse(cmdArr[4]);

                   string item1 = matrix[rowIndexFromMatrix, colIndexFromMatrix];
                   string item2 = matrix[rowIndexOfItemToSwap, colIndexOfItemToSwap];
                   matrix[rowIndexFromMatrix, colIndexFromMatrix] = item2;
                   matrix[rowIndexOfItemToSwap, colIndexOfItemToSwap] = item1;
                   PrintTheMatrix(matrix);
               }
               catch
               {
                   Console.WriteLine("Invalid input!");
               }
                command = Console.ReadLine();
            }
        }

        private static void PrintTheMatrix(string[,] matrix)
        {
            for (int rowIndex = 0; rowIndex < matrix.GetLength(0); rowIndex++)
            {
                for (int colIndex = 0; colIndex < matrix.GetLength(1); colIndex++)
                {
                    Console.Write(matrix[rowIndex, colIndex] + " ");
                }

                Console.WriteLine();
            }
        }

        public static string[,] FillTheMatrix(int rows, int cols)
        {
            string[,] matrix = new string[rows, cols];

            for (int rowIndex = 0; rowIndex < rows; rowIndex++)
            {
                string[] numbersToPut = ReadFromTheConsole();
                for (int colIndex = 0; colIndex < cols; colIndex++)
                {
                    matrix[rowIndex, colIndex] = numbersToPut[colIndex];
                }
            }
            return matrix;
        }

        public static string[] ReadFromTheConsole()
        {
            return Console.ReadLine()
                .Split(" ", StringSplitOptions.RemoveEmptyEntries)
                .ToArray();
        }
    }
}