Robust Asp Net Exception Handling

Annotation This Wrox Blox will teach you how to unravel the mysteries of exception handling in ASP.NET. First, youll get a thorough introduction to structured exception handling in the .NET Framework, learn about the Exception class, the related C♯ language constructs, and how exceptions propagate up the call stack. Then, youll delve into a variety of practical topics such as: when, where, and how to properly throw, catch, and handle exceptions in your code; how to employ defensive programming techniques to avoid triggering the most common CLR exceptions; adopting exception handling best practices, handling exceptions from rich ASP.NET server controls, data-bound controls, data sources, and AJAX asynchronous postbacks; and processing unhandled exceptions at both the page and application levels. The author also walks you through the building of a complete, reusable, and fully configurable ASP.NET exception processing framework that extends far beyond ASP.NETs built-in error handling capabilities. Youll learn how to collect information about the state of the application when the exception occurred; how to leverage various ASP.NET state-handling mechanisms such as Application, Context, Session, ASP.NET Cache, cookies, and query strings to store and pass error data; create a friendly, informative, and highly functional custom error UI; show friendly error messages to normal visitors, while showing detailed error reports only to site managers based on authentication, authorization, or IP; provide a way for users to add their own information to error reports; persist errors to the Windows Event Log, XML files, or a custom database; send detailed error notifications via e-mail and SMS text; and build an administrative dashboard to list, sort, page, view, and manage error logs. Once complete, youll learn how to quickly and easily add this new framework to any web site you create using a simple .NET assembly. A complete sample application and C♯ source code for the exception processing framework are available as a companion download. Table of ContentsWhat Is an Exception? 2The Exception Class 3Structured Exception Handling 5Handling Exceptions 5Exception Propagation: Part 1 9Throwing Exceptions 11Exception Handling Best Practices 13Defensive Programming 13Choose the Right Exception to Throw 17Exceptions Should Be Exceptional 18Dont Abuse Exceptions 18Avoid Swallowing Exceptions 19Dont Try to Handle Everything 20Other Exception Handling Scenarios 20Handling Exceptions in ASP.NET Data Sources 21Handling Exceptions in ASP.NET Data-Bound Controls 22Handling Exceptions in ASP.NET Rich Server Controls 22Handling Exceptions in Asynchronous Postbacks 24Managing Unhandled Exceptions in ASP.NET 25Exception Propagation: Part 2 25The ASP.NET Default Exception Handler 28Page. Error and HttpApplication. Error 30Building a Custom ASP.NET Exception Handler 32The Fourth Coffee Sample Site 33The LD. ExceptionHandling Class Library 39Creating a Custom Error UI 54Adding the Custom Exception Handler to Your Own Site 56Conclusion 57Lee Dumond 58Usage Rights for Wiley Wrox BloxAny Wrox Blox you purchase from this site will come with certain restrictions that allow Wiley to protect the copyrights of its products. After you purchase and download this title, you:Are entitled to three downloadsAre entitled to make a backup copy of the file for your own useAre entitled to print the Wrox Blox for your own useAre entitled to make annotations and comments in the Wrox Blox file for your own useMay not lend, sell or give the Wrox Blox to another userMay.

This Wrox Blox will teach you how to unravel the mysteries of exception handling in ASP.NET. First, you’ll get a thorough introduction to structured exception handling in the .NET Framework, learn about the Exception class, the related C# language constructs, and how exceptions propagate up the call stack. Then, you’ll delve into a variety of practical topics such as: when, where, and how to properly throw, catch, and handle exceptions in your code; how to employ “defensive programming” techniques to avoid triggering the most common CLR exceptions; adopting exception handling “best practices,” handling exceptions from rich ASP.NET server controls, data-bound controls, data sources, and AJAX asynchronous postbacks; and processing unhandled exceptions at both the page and application levels. The author also walks you through the building of a complete, reusable, and fully configurable ASP.NET exception processing framework that extends far beyond ASP.NET’s built-in error handling capabilities. You’ll learn how to collect information about the state of the application when the exception occurred; how to leverage various ASP.NET state-handling mechanisms such as Application, Context, Session, ASP.NET Cache, cookies, and query strings to store and pass error data; create a friendly, informative, and highly functional custom error UI; show friendly error messages to “normal” visitors, while showing detailed error reports only to site managers based on authentication, authorization, or IP; provide a way for users to add their own information to error reports; persist errors to the Windows Event Log, XML files, or a custom database; send detailed error notifications via e-mail and SMS text; and build an administrative dashboard to list, sort, page, view, and manage error logs. Once complete, you’ll learn how to quickly and easily add this new framework to any web site you create using a simple .NET assembly. A complete sample application and C# source code for the exception processing framework are available as a companion download.

Completely reengineered for ASP.NET 4—this definitive guide deftly illuminates the core architecture and programming features of ASP.NET 4 in a single, pragmatic volume. Web development expert Dino Esposito provides essential, architectural-level guidance, along with the in-depth technical insights designed to take you—and your solutions—to the next level. The book covers Dynamic Data, AJAX, Microsoft Silverlight, ASP.NET MVC, Web forms, LINQ, and security strategies—and features extensive code samples in Microsoft Visual C#(R) 2010.

The authors make performance issues the central topic, with very in-depth discussion and examples.

Learn how to create the basic, dynamic, and advanced ASP.NET pages in C# Packed with tips, tricks, and workarounds, this book covers every aspect of developing a Web application for the enterprise using ASP.NET and C#. Written by Microsoft insiders, it shows readers how to create the basic, dynamic, and advanced ASP.NET pages in Microsoft's new C# programming language, and explains how to interact with the database using ADO.NET. The authors review how to transport and display data on the Internet or an Intranet using XML, objects, and Web services. They also explain how to implement security with authentication, integrate important e-commerce issues, and optimize the ASP.NET Web application for optimal performance. Companion Web site features complete source code samples for the applications developed and explained in the book. Microsoft Technologies .NET Platform: The next big overhaul to Microsoft's technologies that will bring enterprise distributed computing to the next level by fully integrating the Internet into the development platform. This will allow interaction between any machine, on any platform, and on any device. Visual Basic.NET: The update to this popular visual programming language will offer greater Web functionality, more sophisticated object-oriented language features, links to Microsoft's new common runtime, and a new interface. ASP.NET: A programming framework (formerly known as Active Server Pages) for building powerful Web-based enterprise applications; can be programmed using VB.NET or C#. C#: Microsoft's new truly object-oriented programming language that builds on the strengths of C++ and the ease of Visual Basic; promises to give Sun's Java a run for its money.

In this book, you’ll be introduced to the features and capabilities of ASP.NET 3.5, as well as the foundation that ASP.NET provides. Updated for the latest release of Visual Studio, this new edition adds five hundred pages of great new content compared to the original 2.0 version of the book. Including both printed and downloadable VB and C# code examples, this edition focuses even more on experienced programmers and advanced web development. New coverage includes new chapters on IIS 7 development, LINQ, ASP.NET, Silverlight, and many others.

Professional ASP.NET 3.5 SP1 In C# and VB ASP.NET 3.5 brings the power of Visual Studio 2008 along with the multitude of language improvements in C# 2008 and Visual Basic 2008 as well as powerful new technology called LINQ, together with the ASP.NET 2.0 Framework you already know and love. Packed with valuable coverage of ASP.NET 3.5 SP1, this essential resource offers both C# and VB examples throughout the book, and shares new and updated content on the ADO.NET Entity Framework, ADO.NET Dynamic Data, and ADO.NET Data Services. While ASP.NET 3.5 boasts server controls like the ListView and the incredibly flexible GridView, it also includes advancements in AJAX technology combined with JavaScript debugging features in Visual Studio 2008. With this book, a stellar author team covers the new controls in the AJAX toolbox, the back button history, and script combining, and they also examine the new capabilities of WCF including changes to DataContractSerializer. In addition, the accompanying CD-ROM features the entire book in PDF format. What you will learn from this book The concepts underlying the server control and its pivotal role in ASP.NET development How to create templated ASP.NET pages using the master page feature How to work with data from enterprise databases including SQL Server Ways to debug, package, and deploy ASP.NET applications, monitor their health and performance, and handle errors How to retrieve, update, and delete data quickly and logically using LINQ with side-by-side examples comparing LINQ to existing techniques Ways to localize your web site in multiple languages for a world-wide audience Methods for adding AJAX capabilities to your ASP.NET applications The many benefits of the new data access additions Ways to use and extend the Provider Model for accessing data stores, processes, and more What freeware tools you need in Scott Hanselman's ASP.NET Ultimate Developer Tools appendix Who this book is for This book is for programmers and developers who are looking to make the transition to ASP.NET 3.5 SP1 with Visual Studio 2008 and either C# 3.0 (2008) or Visual Basic 9 (2008). CD-ROM includes the full book in PDF format and a selection of 7 Wrox Blox mini e-books including: Internet Explorer 8 and Its Impact on Your ASP.NET Web Sites Jumping from ASP.NET to Silverlight 2 Leverage LINQ in ASP.NET 3.5 Projects Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.

Visual Basic 2008 Black Book Is The Most Comprehensive Book That You Will Find On Visual Baisc.Net. It Contains Useful Material On All The Concepts Of Visual Basic 2008, And At The Same Time, Teaches You How To Implement These Concepts Programmatically By Providing Appropriate Examples Along-With Detailed Explanations. This Edition Of The Book Particularly Deals With Some New And Advanced Topics: Such As Wpf, Wcf, Wf, Asp.Net, Ajax, Silverlight, And Linq. This Unique Book On Visual Basic 2008 Has Extensive Coverage Of The Language; No Doubt, Every Aspect Of The Book Is Worth Its Price. Part I - .Net Framework 3.5 And Visual Studio 2008 Chapter 1: Getting Started With .Net Framework 3.5 Chapter 2: Introducing Visual Studio 2008 Part Ii - Visual Basic Programming Language And Oops Chapter 3: Introducing Visual Basic 2008 Chapter 4: Flow Control And Exception Handling In Visual Basic 2008 Chapter 5: Object-Oriented Programming In Visual Basic 2008 Part Iii - Windows Forms And Wpf Chapter 6: Windows Forms In Visual Basic 2008 Chapter 7: Windows Forms Controls - I Chapter 8: Windows Forms Controls- Ii Chapter 9: Windows Forms Controls - Iii Chapter 10: Windows Forms Controls - Iv Chapter 11: Windows Forms Controls - V Chapter 12: Introducing Windows Presentation Foundation Chapter 13: Working With Wpf 3.5 Controls, Resources, Styles, Templates, And Commands Chapter 14: Using Graphics And Multimedia In Windows Forms And Wpf Part Iv - Asp.Net 3.5 Chapter 15: Introducing Asp.Net 3.5 And Web Forms Chapter 16: Standard Web Server Controls Chapter 17: Navigation Controls In Asp.Net 3.5 Chapter 18: Login And Web Parts Controls In Asp.Net 3.5 Chapter 19: Enhancing Web Applications With Silverlight Part V - Services And Deployment Chapter 20: Asp.Net 3.5 Web Services Chapter 21: Introducing Windows Communication Foundation Chapter 22: Deploying Windows And Web Applications Part Vi - Ado.Net And Linq Chapter 23: Data Access With Ado.Net Chapter 24: Data Binding In Windows Forms And Wpf Applications Chapter 25: Data Binding In Asp.Net Applications Chapter 26: Working With Linq Part Vii - Advanced Topics Chapter 27: Working With Windows Workflow Foundation Chapter 28: Threading In Visual Basic 2008 Chapter 29: Collections And Generics Chapter 30: Working With Xml And .Net Chapter 31: The My Object Chapter 32: .Net Assemblies Chapter 33: Developing Windows Mobile Applications Chapter 34: Security And Cryptography In .Net Chapter 35: .Net Remoting In Visual Basic 2008 Chapter 36: Human Resources Management System