List of Listings

Chapter 2: Language Surprises in VB .NET

Listing 2-1. What Is True Really?

Listing 2-2. Ambiguous Overloading

Listing 2-3. Member Overloading in VB .NET vs. C#

Listing 2-4. C# Translation of Listing 2-3

Listing 2-5. More Member Overloading in VB .NET vs. C#

Listing 2-6. C# Translation of Listing 2-5

Listing 2-7. Don't Forget to Override

Listing 2-8. Normal Inheritance Hierarchy

Listing 2-9. Lame Cat Equal to Any Other Cat?

Listing 2-10. Corrected LameCat.Equals Member

Listing 2-11. Using Protection with Inheritance

Listing 2-12. Where Am I?

Listing 2-13. What the Developer Writes

Listing 2-14. What the Compiler Sees

Listing 2-15. What the Developer Sees

Listing 2-16. Is This Better?

Listing 2-17. This Is Best

Listing 2-18. What the Developer Writes

Listing 2-19. What the Developer Sees

Listing 2-20. What the VB .NET Compiler Sees

Listing 2-21. The C# Translation of Listing 2-18

Listing 2-22. What the C# Developer (and Compiler) Sees

Listing 2-23. Boxing Can Be Dangerous

Listing 2-24. Division by Zero

Listing 2-25. Seeing Double

Listing 2-26. Trouble When You Don't Cater Properly to NaN

Listing 2-27. Seeing Double

Listing 2-28. Double Trouble

Chapter 5: Other Debugging Tools

Listing 5-1. Error Handling Comparison

Listing 5-2. CIL Produced by On Error Resume Next

Listing 5-3. CIL Produced by Try Catch Finally

Listing 5-4. Modifying a String Manually

Listing 5-5. Modifying a String Using StringBuilder

Example 1. Assembly Must Execute with Full Trust

Example 2. Assembly Must Execute with Internet Trust

Example 3. Assembly Must Have Full Rights to a Specific File and Folder

Example 4. Assembly Must Be Allowed to Read Anything in a Specific Folder

Example 5. Assembly Must Be Able to Read Part of the Registry

Example 6. Assembly Must Be Able to Use the Clipboard

Example 7. Assembly Must Have Access to System Dialog Boxes

Example 8. Assembly Must Be Able to Use Assertions

Chapter 6: Tracing and Instrumentation

Listing 6-1. Using Trace.WriteLine

Listing 6-2. Using Trace.WriteLineIf

Listing 6-3. Trace.WriteLineIf Performance Constraint

Listing 6-4. Using Trace.Assert

Listing 6-5. Using Trace.Fail

Listing 6-6. Example of an Assertion Message

Listing 6-7. Determining If Tracing Is Active

Listing 6-8. Removing the Default Trace Listener

Listing 6-9. Sending Trace Information to the System Console

Listing 6-10. Sending Trace Information to a Text File

Listing 6-11. Sending Trace Information to the Application Event Log

Listing 6-12. Custom Trace Listener for Recording Performance Data

Listing 6-13. Using the Custom Trace Listener

Listing 6-14. The XML Produced by the Custom Trace Listener

Listing 6-15. Using the BooleanSwitch Class

Listing 6-16. Creating and Using the TraceSwitch Class

Listing 6-17. Using the Custom Trace Switch

Listing 6-18. Creating the Custom Trace Switch

Listing 6-19. XML to Add a Trace Listener at Runtime

Listing 6-20. XML for Changing the Sensitivity of Two Trace Switches

Listing 6-21. XML to Deactivate a Boolean Switch at Runtime

Listing 6-22. XML to Redirect Assertion Failure Messages at Runtime

Listing 6-23. Determining If Debug Is Active

Listing 6-24. Creating the Performance Category and Counters

Listing 6-25. Initialization of Each Performance Counter Instance

Chapter 7: Windows Forms Debugging

Listing 7-1. Implementing the Numeric TextBox Control

Listing 7-2. Controlling and Viewing Control Debug Events

Chapter 8: Web Services Debugging

Listing 8-1. The Debug Setting in TimeServer's Web.config

Listing 8-2. The TimeService Class

Listing 8-3. Exception Produced by the ThrowExceptionRaw Web Method

Listing 8-4. The ThrowExceptionCustom Web Method Throws a Custom Exception

Listing 8-5. Creating a Custom SoapException with Required Information

Listing 8-6. Displaying the Custom Exception in the Client Application

Listing 8-7. Hiding Exception Details for Nonlocal Users

Listing 8-8. CustomErrors Setting in TimeServer's Web.config

Listing 8-9. The Bare-bones SoapMonitor Custom SOAP Extension

Listing 8-10. Setting Up Access to the SOAP Stream Memory Buffer

Listing 8-11. Complete SoapMonitor Custom SOAP Extension

Listing 8-12. The SoapMonitorAttribute Custom SOAP Attribute

Listing 8-13. Binding the SoapMonitor Extension to a Web Method

Listing 8-14. The ProcessMessage Method on a Client-Based SOAP Extension

Listing 8-15. Binding the SoapMonitor Extension to a Web Method

Chapter 9: ASP .NET Debugging

Listing 9-1. Triggering an Unhandled Exception

Listing 9-2. Triggering and Catching an Exception Within a Procedure

Listing 9-3. Triggering a Page-Level Exception

Listing 9-4. Dealing with a Page-Level Error Using the Page_Error Event

Listing 9-5. Using Web.config to Redirect an Exception to a Custom Page

Listing 9-6. Triggering an Application-Level Exception

Listing 9-7. Dealing with an Application-Level Error Using an Application_Error Event

Listing 9-8. Using Web.config to Redirect Various Exception Types

Listing 9-9. Enabling Page-Level Tracing at Design Time

Listing 9-10. Enabling Page-Level Tracing at Runtime

Listing 9-11. Enabling Application-Level Tracing

Listing 9-12. Loading the Trace Viewer Page

Chapter 10: Windows Services Debugging

Listing 10-1. Running a Windows Service As a Standard.exe

Listing 10-2. Updating ServiceAdmin's Description During Installation

Chapter 11: VB .Classic Debugging

Listing 11-1. VB .NET Component Code for Use by a COM Client

Listing 11-2. Type Library Information with a ClassInterface Attribute of AutoDispatch

Listing 11-3. Type Library Information with a ClassInterface Attribute of AutoDual

Listing 11-4. VB .NET Can Combine COM Early Binding with Good COM Versioning

Listing 11-5. Type Library Information with a Separately-Implemented Interface

Chapter 12: SQL Server Debugging

Listing 12-1. Creating the Test Tables

Listing 12-2. Creating the Test Stored Procedure

Listing 12-3. The Corrected Stored Procedure

Chapter 13: Error Handling and Exception Management

Listing 13-1. Pseudo-Code for Try Catch Finally

Listing 13-2. Probing the System.IO.File.Move Method

Listing 13-3. Improving the System.IO.File.Move Method

Listing 13-4. A Bad Way to "Improve" the System.IO.File.Move Method

Listing 13-5. Hiding an Implementation Detail with a Framework Exception

Listing 13-6. Hiding an Implementation Detail with a Custom Exception

Listing 13-7. A Usable UserLoadException Custom Exception

Listing 13-8. UserLoadException Custom Exception with Serialization

Listing 13-9. UserLoadException Custom Exception with the UserId Property

Listing 13-10. UserLoadException Complete Custom Exception

Listing 13-11. An Unhandled Exception Filter That Reports Exception Information

Listing 13-12. Implementing a Realistic Unhandled Exception Filter

Listing 13-13. Overriding the Windows Form Built-in Unhandled Exception Dialog Window

Listing 13-14. Catering to Every Possible Type of Unhandled Exception Situation

Listing 13-15. Publishing an Exception Using the Exception Management Application Block

Chapter 14: Debugging Multithreaded Applications

Listing 14-1. The CountCoordinator Class

Listing 14-2. The CountWorker Class

Listing 14-3. Adding SyncLock to Synchronize Access to Shared Data

Listing 14-4. The Bank Class

Listing 14-5. The Cashier Class

Listing 14-6. The Account Class

Listing 14-7. A Hypothetical Transfer Method

Listing 14-8. A Thread-Safe Class for Reading and Writing Shared Data

Listing 14-9. Displaying All Win32 Threads Within a Specified Process

Listing 14-10. Displaying All User Threads Within a Specified Process

Listing 14-11. Code to Launch the Calculation Thread

Listing 14-12. Performing the Accumulation Calculation

Listing 14-13. Updating the User Interface with Intermediate Calculation Results

Listing 14-14. Canceling the Calculation

Listing 14-15. Completing the Calculation

Listing 14-16. Trapping Any Calculation Thread Exception