C#語法學習：異常處理(Exception)(2)

/*
* Created by SharpDevelop.
* User: Administrator
* Date: 2008/9/11
* Time: 下午 04:16
*
*/
using System;
using System.IO;
public class Exceptions
{
public static int Main()
{
byte[] myStream=new byte[3];
StreamWriter sw=new StreamWriter("exceptions.txt");
try
{
for(byte b=0;b<10;b++)
{
sw.WriteLine("Byte {0}:{1}",b+1,b);
myStream[b]=b;
}
}
catch(Exception e)
{
Console.WriteLine(e.Message);
}
finally
{
sw.WriteLine("Close");
sw.Close();
}
return 0;
}
}

/*
* Created by SharpDevelop.
* User: Administrator
* Date: 2008/9/11
* Time: 下午 04:29
*
*/
using System;
using System.IO;
public class TooManyItemsException:Exception
{
public TooManyItemsException():base(@"自己設計的異常信息"){}
}
public class ExceptionTester
{
public static int Main()
{
ExceptionTester myExceptionMaker=new ExceptionTester();
try
{
myExceptionMaker.GenerateException(5);
}
catch(Exception e)
{
Console.WriteLine(e.Message);
}
finally
{
Console.WriteLine("Finally from Main.");
}
return 0;
}
void GenerateException(int iterations)
{
int mySize=3;
byte[] myStream=new byte[mySize];
StreamWriter sw=new StreamWriter("aa.txt");
try
{
if(iterations>myStream.Length)
{
throw new TooManyItemsException();
}
for(byte b=0;b<iterations;b++)
{
sw.WriteLine("Byte {0}:{1}",b+1,b);
myStream[b]=b;
}
}
finally
{
Console.WriteLine("Finally from GenerateException.");
sw.WriteLine("Close");
sw.Close();
}
}
}