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Maha
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323.5k
Exception
Jun 25 2013 11:16 AM
There is a statement in a book saying that "Every Exception object contains a ToString() method and a Message field". Message field is obvious this is highlighted in the following program. Please explain what is meant by ToString() method.
using System;
public class TryBankAccount
{
public static void Main()
{
BankAccount acct = new BankAccount();
try
{
acct.SetAccountNum(1234);
acct.SetBalance(-1000);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
Console.WriteLine(e.StackTrace);
}
Console.ReadKey();
}
}
public class BankAccount
{
private int accountNum;
private double balance;
public int GetAccountNum()
{
return accountNum;
}
public void SetAccountNum(int acctNumber)
{
accountNum = acctNumber;
}
public double GetBalance()
{
return balance;
}
public void SetBalance(double bal)
{
if (bal < 0)
{
NegativeBalanceException nbe = new NegativeBalanceException();
throw (nbe);
}
balance = bal;
}
}
public class NegativeBalanceException : ApplicationException
{
private static string msg = "Bank balance is negative.";
public NegativeBalanceException() : base(msg)
{
}
}
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