customexception.cs

vc的原码例子12 vc的原码例子12

using System;
using System.Collections;

class BookException : System.Exception
{
	public BookException() : base()
	{
		ExceptionDateTime = DateTime.Now;
	}

	public DateTime ExceptionDateTime;
}

class Book
{
	public Book(string title, int pages)
	{
		this.title = title;
		if (pages > 500)
		  throw (new BookException());
		else
	      this.pages = pages;
	}

	private string title;
	private int pages;
}

public class CustomException  
{
	public static void Main()  
	{
		try 
		{
			Book MyNovel = new Book("American Dream", 600);
		}
		catch (BookException e)
		{
			Console.WriteLine("Caught exception");
			Console.WriteLine("{0}", e.ExceptionDateTime.ToString());
		}
	}
}