illustrates exception propagation with methods

   

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/

/*
  Example13_6.cs illustrates exception propagation
  with methods
*/

using System;


// declare the ExceptionsTest class
class ExceptionsTest
{

  public void AccessInvalidArrayElement()
  {
    int[] myArray = new int[2];
    try
    {
      Console.WriteLine("Attempting to access an invalid array element");
      myArray[2] = 1;
    }
    catch (IndexOutOfRangeException e)
    {
      Console.WriteLine("Handling an IndexOutOfRangeException");
      Console.WriteLine("Message = " + e.Message);
      Console.WriteLine("StackTrace = " + e.StackTrace);
    }
  }

  public void DivideByZero()
  {
    int zero = 0;
    Console.WriteLine("Attempting division by zero");
    int myInt = 1 / zero;
  }

}


public class Example13_6
{

  public static void Main()
  {

    ExceptionsTest myExceptionsTest = new ExceptionsTest();

    // call the AccessInvalidArrayElement() method,
    // this method handles the exception locally
    Console.WriteLine("Calling AccessInvalidArrayElement()");
    myExceptionsTest.AccessInvalidArrayElement();

    try
    {

      // call the DivideByZero() method,
      // this method doesn't handle the exception locally and
      // so it must be handled here
      Console.WriteLine("Calling DivideByZero()");
      myExceptionsTest.DivideByZero();

    }
    catch (DivideByZeroException e)
    {

      Console.WriteLine("Handling an IndexOutOfRangeException");
      Console.WriteLine("Message = " + e.Message);
      Console.WriteLine("StackTrace = " + e.StackTrace);

    }

  }

}