Practice Exercises C# Sharp - Learn to program with performing exercises C# Sharp

Practice Exercises C# Sharp

Learn to program with performing exercises C# Sharp

Table + array + files - Practice Exercises C# Sharp
Practice Exercises C# Sharp4,55302940

Table + array + files - Practice Exercises C# Sharp


Lesson 9:

Object persistence


Exercise 9.1:

Table + array + files


Objetive:

Expand the exercise of January 9th (tables + array), so that it contains two new methods, to dump the data of the array into a binary file and restore the data from the file.


Source Code:


using System;
using System.IO;
namespace Tables
{
    class Table
    {
        protected int width, height;

        public Table(int tableWidth, int tableHeight)
        {
            width = tableWidth;
            height = tableHeight;
        }

        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)
        {
            Table[] tableList = new Table[10];
            Random random = new Random();

            for (int i = 0; i < tableList.Length - 1; i++)
            {
                tableList[i] = new Table(
                    random.Next(50, 201),
                    random.Next(50, 201));
            }
            tableList[0].Save("1.dat");
            tableList[9] = new Table(0, 0);
            tableList[9].Load("1.dat");

            for (int i = 0; i < tableList.Length; i++)
            {
                tableList[i].ShowData();
            }

            Console.ReadLine();
        }
    }
}
Exercisey 9.1

Share Now:







Privacy Policy:



Google uses associated advertising companies to serve ads when it visits our website. These companies may use the information they obtain from your visits to this and other websites (not including your name, address, email address, or phone number) to provide you with announcements about products and services that interest you. If you would like to learn more about this practice and know your options to prevent these companies from using this information. Click in... Privacy and Terms of Google.

Cookies

This site uses Google cookies to provide its services, to personalize advertisements and to analyze traffic. Google receives information about your use of this website. More information in... Privacy and Terms of Google.