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Summary

Migrating to .NET: A Pragmatic Path to Visual Basic .NET, Visual C++.NET, and ASP.NET, by .NET migration experts from Patni Computer Systems Ltd., assists intermediate to advanced Visual Basic, Visual C++, and ASP programmers in every step of migrating legacy code to the new .NET platform. This book is rich with code samples and case studies.

Author Biography

All authors work at Patni Computer Systems, Ltd.

DHANANJAY KATRE is a senior software specialist. A key member of Patni's .NET Technology Group, he is responsible for formulating .NET migration methodologies. He received a spot appreciation award within Patni for his contributions.

PRASHANT HALARI is a senior software engineer. He focuses on product development. A key member of Patni's .NET Technology Group, Prashant received Patni's Valuable Contribution Award for his work in developing .NET migration methodologies.

NARAYANA RAO SURAPANENI is a senior software engineer. He is a Microsoft.NET Global MVP, MVP in spotlight and is also a Microsoft Certified Solution Developer and a Sun Certified Java Professional. Narayana leads .NET and Web Services technology group at Patni.

MANU GUPTA is a senior software engineer. He specializes in the areas of Web Services and Microsoft .NET compact Framework. He was involved in developing .NET migration methodologies especially for VC++ .NET.

MEGHANA DESHPANDE is a software engineer. She was responsible for developing migration methodology and preparing white papers for migrating ASP applications to ASP.NET within Patni.

Preface.
About this Series.
1. Microsoft .NET Framework.

Need for .NET Framework. Building Blocks of .NET. Introduction to Microsoft .NET Framework. Additional Concepts in .NET Framework. Consideration for Migration. Roadmap to Migration. Phases Involved in Migration. Summary.

2. New Features in Visual Basic .NET.

Visual Basic .NET Features. Object-Oriented Features of Visual Basic .NET. Structured Exception Handling. Threading Features. Language Interoperability. Summary.

3. Visual Basic to Visual Basic .NET: Migration Approach.

Road Map to Migration. Assessment. Upgrade Wizard Overview. Post-migration Changes Overview. Pre-migration Recommendations. Understanding Language and Syntax Changes. Understanding the Data Type Changes. Steps for Pre-migration Changes. Upgrade Wizard in Visual Studio .NET. Summary.

4. Post-migration Changes.

Categorization By Functionalities. Graphics. Dynamic Data Exchange. Object Linking and Embedding. Help Functionality. Database Changes. Drag and Drop Changes. Menu Object Changes. Multiple-Document Interface Form Changes. Controls Collection Changes. Win32 API Calls. Designers. COM+ Components. Summary.

5. Migration Approach for ASP to ASP.NET.

Need for a New Version. Why Migrate to ASP.NET. Migration Approach. Considerations for Migration. Pre-migration Strategy. Guidelines for Code Changes. Security Settings. Summary.

6. Migrating to ASP.NET I.

Creating an ASP.NET Web Application. Categorization by Functionality. Summary.

7. Migrating to ASP.NET II.

Session State Management. Intrinsic Objects. Structural Changes. Language Changes. Summary.

8. New Features in Visual C++ .NET.

Managed Extensions. Platform Invoke. Web Services. ATL Server. ATL Server Web Services. Managed C++ Web Services. Summary.

9. Migrating to Visual C++ .NET.

Exception Handling. Migration Strategies for Exception Handling. Interoperability. COM Migration. COM Interoperability. Registering the Assembly with COM. Making the Components Accessible. Building the .NET Component. Migrating an Existing C++ Class to .NET Framework. Summary.

10. Dealing with Legacy Components in .NET.

What Defines Code Reusability. Important Features of .NET. The Drawbacks of COM. COM Versus .NET Components. Need for Interoperability between .NET and COM. Managed Environment Versus Unmanaged Environment. Exposing COM Components to .NET Framework. Exposing .NET Components to COM Clients. Summary.

11. Exposing Legacy Components as Web Services.

Using Microsoft SOAP ToolKit. Consuming Web Services. Summary.

12. Visual Basic .NET Migration Case Study.

Introduction to PMS. Front End for the System. Components in PMS. Reports in PMS. Migration of Visual Basic Application. Architecture of the Migrated PMS System. Summary.

13. Case Study: ASP to ASP.NET.

ASP Web Application. Migrating the Application. Summary.

14. Visual C++ .NET Migration Case Study.

Setting Up PMS in Visual C++ 6.0. Front End for the System. COM Components in PMS. ISAPI DLLs in PMS. CustomerServices DLL. Flow of Information in the PMS. Migration of Visual C++ Application to Visual C++.NET. Summary.

Appendix A. Controls in Visual Basic.
Appendix B. Comparison between HTML Controls and Server Controls.
Index.

Supplemental Materials

What is included with this book?

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The Used, Rental and eBook copies of this book are not guaranteed to include any supplemental materials. Typically, only the book itself is included. This is true even if the title states it includes any access cards, study guides, lab manuals, CDs, etc.

Excerpts

PREFACEWe strongly believe that a title on migration to Microsoft .NET will benefit a large number of developers and IT strategists. Microsoft .NET has introduced a totally new programming model for developers.Microsoft .NET is built on the basis of the Internet as an operating system. Microsoft has studied and discovered the difficulties of programming in traditional languages such as Visual Basic and Visual C++ and the difficulties of COM programming. Microsoft .NET technology offers scalability, performance improvements, ease of application deployment, security and interoperability across various programming languages. Issues such as registration of COM components and reference counting are not present in Microsoft .NET applications.This book covers the basic concepts of migration to .NET technologies. It details various programming languages (such as VB.NET, Managed VC++ and ASP.NET) and key differences, as well as advantages, over their predecessors. The book details the steps involved in migration. It has a rich set of examples and case studies to cover important aspects of migration like Pre-migration and Post-migration. The last section of the book covers issues related to component migration and interoperability.The book has been divided into the following sections: Chapter 1--.NET Framework concepts and migration methodology in general Chapters 2 to 4--topics related to migration to Visual Basic .NET Chapters 5 to 7--topics related to ASP to ASP.NET migration Chapters 8 and 9--topics related to Visual C++ .NET migration Chapters 10 and 11--topics like COM interoperability and exposing COM components as Web services Chapters 12 to 14--case study for illustrating the migration concepts Audience for This BookThe book targets people in different levels of the IT industry who are involved in strategizing and performing migration activities. The examples and case studies are targeted towards intermediate and advanced programmers and developers of Visual Basic, Visual C++ and ASP applications.The book targets readers working on Microsoft .NET. It specifically targets developers, professionals and managers who are interested in migrating applications written in Visual Basic, Visual C++ and ASP to the Microsoft .NET platform.It is meant for audiences who have a knowledge of OOP concepts, understanding of Visual Basic, Visual C++, ASP application architecture and the Microsoft .NET platform and who have over 3 years of working experience.The book will provide the foundation for programmers and developers belonging to the target audience to leverage the power of Microsoft .NET. It will also equip programmers with the necessary details to migrate and reap the benefits of the Microsoft .NET world and showcase the myriad ways to exploit the benefits of the Microsoft .NET environment. The book covers a broad range of topics that will comprehensively explain emerging trends in migration of these applications.The concepts are backed with relevant and well-illustrated examples and case studies. All the topics listed will be treated with appropriate importance targeting VB, VC++ and ASP developers and, most importantly, Microsoft .NET users.