PrintMatrix.cs

private void PrintMatrix(int[][] matrix){
  for(int i=0;i<matrix.Length;i++) {
    for(int j=0;j<matrix[0].Length;j++) {
      Console.Write(matrix[i][j] + " ");
    }
    Console.WriteLine("");
  }
}

private void PrintMatrix(int[,] matrix){
        for(int i=0;i<matrix.GetLength(0);i++) {
            for(int j=0;j<matrix.GetLength(1);j++) {
                Console.Write(matrix[i,j] + " ");
            }
            Console.WriteLine("");
        }
    }