Ejercicio
Tabla + SetOfTables + archivos
Objetivo
Ampliar el ejercicio del 16 de abril (tablas + array + archivos), de manera que contenga tres clases: Table, SetOfTables y un programa de prueba. SetOfTables debe contener la matriz de tablas y dos métodos para volcar (todos) los datos de la matriz en un archivo binario y restaurar los datos del archivo.
Código
using System;
using System.Collections;
using System.IO;
namespace Tables
{
class SetOfTables
{
private int size;
private ArrayList data;
Random random;
public SetOfTables(int newSize)
{
size = newSize;
data = new ArrayList();
random = new Random();
}
public SetOfTables()
: this(10)
{
}
public void CreateAtRandom()
{
data = new ArrayList();
for (int i = 0; i < size; i++)
{
data.Add( new Table(random.Next(50, 201); random.Next(50, 201);
}
}
public void ShowData()
{
foreach (Table t in data)
{
t.ShowData();
}
Console.WriteLine();
}
public void Save(string name)
{
BinaryWriter outputFile = new BinaryWriter(
File.Open(name, FileMode.Create));
outputFile.Write((int)size);
foreach (Table t in data)
{
outputFile.Write(t.GetHeight());
outputFile.Write(t.GetWidth());
}
outputFile.Close();
}
public void Load(string name)
{
BinaryReader inputFile = new BinaryReader(
File.Open(name, FileMode.Open));
int size = inputFile.ReadInt32();
data = new ArrayList();
for (int i = 0; i < size; i++)
{
int height = inputFile.ReadInt32();
int width = inputFile.ReadInt32();
data.Add(new Table(width, height));
}
inputFile.Close();
}
}
}
using System;
using System.IO;
namespace Tables
{
class Table
{
protected int width, height;
public Table(int tableWidth, int tableHeight)
{
width = tableWidth;
height = tableHeight;
}
public int GetHeight()
{
return height;
}
public int GetWidth()
{
return width;
}
public void ShowData()
{
Console.WriteLine("Width: {0}, Height: {1}", width, height);
}
public void Save(string name)
{
BinaryWriter outputFile = new BinaryWriter(
File.Open(name, FileMode.Create));
outputFile.Write(height);
outputFile.Write(width);
outputFile.Close();
}
public void Load(string name)
{
BinaryReader inputFile = new BinaryReader(
File.Open(name, FileMode.Open));
height = inputFile.ReadInt32();
width = inputFile.ReadInt32();
inputFile.Close();
}
}
}
using System;
namespace Tables
{
class TestTable
{
static void Main(string[] args)
{
SetOfTables s = new SetOfTables(5);
s.CreateAtRandom();
s.ShowData();
s.Save("tables.dat");
s.CreateAtRandom();
s.ShowData();
s.Load("tables.dat");
s.ShowData();
Console.ReadLine();
}
}
}