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

Publisher: Sybex;
ISBN: 0782129110
*/
/*
  Example13_3.cs illustrates how to handle a specific exception
*/

using System;

public class Example13_3
{

  public static void Main()
  {

    try
    {

      int zero = 0;
      Console.WriteLine("In try block: attempting division by zero");
      int myInt = 1 / zero;  // throws the exception

    }
    catch (DivideByZeroException myException)
    {

      // code that handles a DivideByZeroException
      Console.WriteLine("Message = " + myException.Message);
      Console.WriteLine("StackTrace = " + myException.StackTrace);

    }

  }

}


           
          

   

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

Publisher: Sybex;
ISBN: 0782129110
*/

/*
  Example13_7.cs illustrates an unhandled exception
*/

using System;

public class Example13_7
{

  public static void Main()
  {

    int[] myArray = new int[2];
    Console.WriteLine("Attempting to access an invalid array element");
    myArray[2] = 1;

  }

}

           
          

   


using System;

public class CatchError
{
    public static void Main()
    {
        int var1 = 1000, var2 = 0, var3;

        try
        {
            var3 = var1 / var2;
        }
        catch (ArithmeticException e)
        {
            Console.WriteLine("Exception: {0}", e.ToString());
            var3 = -1;
        }
        catch (Exception e)
        {
            Console.WriteLine("Exception: {0}", e.ToString());
            var3 = -2;
        }
        Console.WriteLine("The result is: {0}", var3);
    }
}


           
          

/*
C#: The Complete Reference
by Herbert Schildt

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/

// Rethrow an exception.

using System;

class Rethrow {
public static void genException() {
// here, numer is longer than denom
int[] numer = { 4, 8, 16, 32, 64, 128, 256, 512 };
int[] denom = { 2, 0, 4, 4, 0, 8 };

for(int i=0; i

   

/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/

// Manually throw an exception. 
 
using System; 
 
public class ThrowDemo { 
  public static void Main() { 
    try { 
      Console.WriteLine("Before throw."); 
      throw new DivideByZeroException(); 
    } 
    catch (DivideByZeroException) { 
      // catch the exception 
      Console.WriteLine("Exception caught."); 
    } 
    Console.WriteLine("After try/catch block."); 
  } 
}


           
          

/*
C#: The Complete Reference
by Herbert Schildt

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/

// Let the C# runtime system handle the error.

using System;

public class NotHandled {
public static void Main() {
int[] nums = new int[4];

Console.WriteLine(“Before exception is generated.”);

// Generate an index out-of-bounds exception.
for(int i=0; i < 10; i++) { nums[i] = i; Console.WriteLine("nums[{0}]: {1}", i, nums[i]); } } } [/csharp]

   

/*
C# Programming Tips & Techniques
by Charles Wright, Kris Jamsa

Publisher: Osborne/McGraw-Hill (December 28, 2001)
ISBN: 0072193794
*/

//  Rethrow.cs -- Demonstrates rethrowing an exception from a method.
//
//                Compile this program with the following command line:
//                    C:>csc Rethrow.cs
//
namespace nsRethrow
{
    using System;
    using System.IO;
    
    public class Rethrow
    {
        static public void Main ()
        {
            while (true)
            {
                Console.Write ("Please enter a file name (return to exit): ");
                string FileName = Console.ReadLine ();
                if (FileName.Length == 0)
                    break;
                try
                {
                    ReadFile (FileName);
                    break;
                }
                catch (IOException e)
                {
                    if (e is FileNotFoundException)
                        Console.WriteLine ("The file " + FileName + " was not found");
                }
                catch (Exception e)
                {
                    Console.WriteLine (e.Message + "
");
                    break;
                }
            }
        }
        static public void ReadFile (string FileName)
        {
            FileStream strm;
            StreamReader reader;
            try
            {
                strm = new FileStream (FileName, FileMode.Open);
                reader = new StreamReader (strm);
                string str = reader.ReadToEnd ();
                Console.WriteLine (str);
            }
            catch (IOException e)
            {
                // If file not found, go back and get another name
                if (e is FileNotFoundException)
                    throw (e);
                // Code here to handle other IOException classes
                Console.WriteLine (e.Message);
                throw (new IOException());
            }
        }
    }
}