/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Derived exceptions must appear before base class exceptions.
using System;
// Create an exception.
class ExceptA : ApplicationException {
public ExceptA() : base() { }
public ExceptA(string str) : base(str) { }
public override string ToString() {
return Message;
}
}
// Create an exception derived from ExceptA
class ExceptB : ExceptA {
public ExceptB() : base() { }
public ExceptB(string str) : base(str) { }
public override string ToString() {
return Message;
}
}
public class OrderMatters {
public static void Main() {
for(int x = 0; x < 3; x++) {
try {
if(x==0) throw new ExceptA("Caught an ExceptA exception");
else if(x==1) throw new ExceptB("Caught an ExceptB exception");
else throw new Exception();
}
catch (ExceptB exc) {
// catch the exception
Console.WriteLine(exc);
}
catch (ExceptA exc) {
// catch the exception
Console.WriteLine(exc);
}
catch (Exception exc) {
Console.WriteLine(exc);
}
}
}
}
[/csharp]