Move of the methods are instance methods that aren't declared inside a class definition (and are thus invalid). Several variables aren't declared anywhere, and the aforementioned methods are instance methods rather than static methods.
Fixed version:
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
namespace testapp
{
using System.Runtime.Serialization.Formatters.Binary; //namespace to use Serialization
public static class Program
{
static ArrayList recordList;
static Record records;
class Record
{
private string name;
public string Name
{
get { return name; }
set { name = value; }
}
private double homeNumber;
public double HomeNumber
{
get { return homeNumber; }
set { homeNumber = value; }
}
private double mobNumber;
public double MobNumber
{
get { return mobNumber; }
set { mobNumber = value; }
}
private string address;
public string Address
{
get { return address; }
set { address = value; }
}
// Default Constructor
public Record()
{
this.name = string.Empty;
this.homeNumber = 0000;
this.MobNumber = 0000;
this.address = "Fake";
}
// Parameterized Constructor
public Record(string n, double hNum, double mobNum, string add)
{
this.name = n;
this.homeNumber = hNum;
this.mobNumber = mobNum;
this.address = add;
}
public void print()
{
System.Console.WriteLine("The Name Is : " + this.name);
System.Console.WriteLine(" Home Phone No. Is : " + this.homeNumber);
System.Console.WriteLine(" Mobile Phone No. Is : " + this.mobNumber);
System.Console.WriteLine(" Address Is : " + this.address);
}
}
// Add a new Record first to ArrayList(recordList) and then in file
public static void addNewRecord()
{
recordList = new ArrayList();
records = new Record();
// Here Adding Record to ArrayList
recordList.Add(new Record("osama", 36887676, 3333003212, "Lahore"));
recordList.Add(new Record("saad", 4234234, 33330065656, "Ali Park"));
recordList.Add(new Record("bilal", 2123456, 0456123232, "Multan"));
recordList.Add(new Record("maryam", 1312312, 33330032121, "Karachi"));
FileStream fs = new FileStream("data.txt", FileMode.Create, FileAccess.Write);
BinaryFormatter bf = new BinaryFormatter();
}
// Loads the all reocrds from file and add to ArrayList(recordList)
public static void loadRecord()
{
recordList = new ArrayList();
FileStream fs = new FileStream("data.txt", FileMode.Open, FileAccess.Read);
BinaryFormatter bf = new BinaryFormatter();
try
{
while (fs.CanRead)//Reading the FileStream
{
Record r = (Record)bf.Deserialize(fs);//De-Serialize the each object
recordList.Add(r); //And Add to ArrayList
r.print(); //Printing the each record from the file to console
}
}
catch (Exception e) { }
fs.Close();
}
// Saving the record to file.
public static void saveRecord()
{
FileStream fs = new FileStream("data.txt", FileMode.Create, FileAccess.Write);
BinaryFormatter bf = new BinaryFormatter();
for (int i = 0; i < recordList.Count; i++)
{
var record = (Record)recordList[i];
bf.Serialize(fs, record);
fs.Flush();
}
fs.Close();
}
public static void enterInPhoneDirectory()
{
var record = new Record();
loadRecord();
Console.WriteLine("Enter Your Home Number/ Mobile Number : ");
double number = double.Parse(Console.ReadLine()); // User to enter his/her Home/mobile no.
for (int j = 0; j < recordList.Count; j++)
{
record = (Record)recordList[j];
if (record.HomeNumber == number || record.MobNumber == number)
{
Console.WriteLine("Welcome , " + record.Name.ToUpper());
record.print();
Console.WriteLine("Press 1 to Change Home Number");
Console.WriteLine("Press 2 to Change Mobile Number");
Console.WriteLine("Press 3 to Change Address");
Console.WriteLine("Press 4 to exit this menu");
int option = int.Parse(Console.ReadLine());
switch (option)
{
case 1:
Console.WriteLine("Enter Your New Home Number");
double hNum = double.Parse(Console.ReadLine());
record.HomeNumber = hNum;
break;
case 2:
Console.WriteLine("Enter Your New Mobile Number");
double mNum = double.Parse(Console.ReadLine());
record.MobNumber = mNum;
break;
case 3:
Console.WriteLine("Enter Your New Address");
string add = Console.ReadLine();
record.Address = add;
break;
case 4:
Console.Clear();
Main(new string[] { "s" });
break;
}
saveRecord();
}
}
}
public static void Main(string[] args)
{
// Front end menu
Console.WriteLine("----------Menu----------");
Console.WriteLine("Press 1 to enter number (home / mobile)");
Console.WriteLine("Press 2 to exit");
int input = int.Parse(Console.ReadLine());
switch (input)
{
case 1:
enterInPhoneDirectory();
break;
case 2:
Environment.Exit(0);
break;
}
}
}
}
