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Building Effective Web Applications with ASP .Net 3.5

Building Effective Web Applications with ASP .Net 3.5. Noah Subrin SRA University Fall 2008 Week 1. Course Schedule and Format. Schedule Every Thursday 08:30 to 10:30 October 23 through December 4 No class the week of November 24-28 Course Format

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Building Effective Web Applications with ASP .Net 3.5

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  1. Building Effective Web Applications with ASP .Net 3.5 Noah Subrin SRA University Fall 2008 Week 1

  2. Course Schedule and Format • Schedule • Every Thursday 08:30 to 10:30 October 23 through December 4 • No class the week of November 24-28 • Course Format • Presentations, Demos, Code Walkthroughs, White Papers, Course Text, Virtual Labs

  3. Target Audience • Prior web development experience • Best geared towards programmers, software engineers, web designers, technical leads, task leads and architects. • Class will be taught using C# which has a similar syntax to Java

  4. Instructor Introduction • Technical Lead (IRS JOC-ETD project) • MCSD and MCSD .Net • Represent SRA at developer community events in the Southeast • Author of five prior SRA-U courses • Contact info: noah_subrin@sra.com

  5. Course Objectives • Become familiar with new features in ASP .Net 3.5 • Build database driven apps using LINQ • Leverage ASP .Net AJAX on both the client and server side • Learn about state management and caching • Secure your ASP .Net websites • Create an end to end web app

  6. Course Roadmap • Week 1 – Getting Started • Week 2 – Data Access, ADO .Net and LINQ • Week 3 – AJAX • Week 4 – State Management and Caching • Week 5 – Security • Week 6 – End to End app and SP1

  7. Course Text and Code Samples • ASP .Net 3.5 Unleashed ( author Stephen Walther - Sam’s Publishing) • Code samples available for download at www.superexpert.com • CD that accompanies the book has both C# and VB .Net versions of the code • Chapter 1 is available as a free download from www.bookpool.com • Demo how to run book code

  8. Today’s Agenda – Getting Started • Tools We Will Use • ASP .Net 3.5 Overview • Project Setup/Configuration • WebForms Overview • Server Controls • User Controls • Master Pages • Debugging and Tracing • New Features in ASP .Net 3.5

  9. ASP .Net 3.5 Overview • ASP .Net 3.5 is a technology that allows programmers to create dynamic web sites. • ASP .Net can be used to create small personal web sites or Enterprise applications • ASP .Net is part of the .Net Framework • .Net Framework consists of the Framework Class Library and the Common Language Runtime

  10. Tools We Will Use • VS 2008 Professional or Visual Web Developer 2008 • SQL Server Express Edition or higher (2005 or 2008) Express Edition or higher • Links to download these products can be found on http://msdn.microsoft.com • VS2008 available from MS, MSDN or Team System subscription or contact Bill Scherer Jr (SRA Enterprise Solutions Tech Director)

  11. Working with .Net Projects – VS2003 • VS2003: Single solution file. Project precompiled into a single DLL, ASPX markup pages deployed. • Pros: • Compiles/debugs like other projects (WinForms, etc.) • Slightly more efficient. • Single file deployment + referenced DLLs + HTML. • Cons: • Not easy to use in team environments. • Often leads to monolithic DLLs for large sites.

  12. Working with Projects - VS2005 • VS2005: Website Compilation Model – All files compiled on demand. • Pros: • Works better in teams. • Easy to deploy/test incremental updates. • Cons: • Can be difficult to upgrade from VS2003. • First hit incurs compilation overhead. • May mean more files to deploy.

  13. Working with Projects - VS2008 • VS2008: Both models supported out of the box. File -> New -> Web Site File -> New -> Web Site File -> New -> Project -> ASP.NET Web App New style New style New style Old style

  14. Demo • Create a new website using ASP .Net 3.5 and VS2008

  15. Web Forms Key Points • ASPX pages handled by a handler that facilitate the page lifecycle and events (such as Page_Load, PreRender, and control events). • Uses ViewState to encoded state-specific information otherwise lost in the stateless nature of HTTP. • Extensive controls library to abstract functionality. Buttons, textboxes, etc. • Extensible. • Web Forms have a .aspx file extension.

  16. Server Controls • Typically compiled into a DLL. • Represents a small piece of functionality, like a textbox or button. • Responsible for handling any special rendering requirements, raising events, etc. Event Handlers Properties

  17. User Controls • Collections of HTML and/or Server Controls for a broader purpose – such as a login dialog box. • Typically part of a project and compiled with the project. • Can expose properties.

  18. HTML Controls • Take any HTML tag and add a runat=“server” tag. • This converts the HTML tag into a server-side ASP .Net control • Allow us to program server side events

  19. Master Pages • Same look and feel to many pages; code in one spot.

  20. Break • We will look at some other Demos after break

  21. ViewState (p29) • The HTTP Protocol is a stateless protocol • Web Pages use a Request/Response model • ViewState allows us to save the state of a server control across multiple page requests • Comes with performance overhead • Enabled by default for each control

  22. Demo • Add page level tracing to existing page • Examine page lifecycle • Examine Viewstate cost • Write to trace log • We can determine if the page is posting back by using the Page.IsPostback property • We can turn tracing and debugging on at the page or app level

  23. Dynamic Compilation (p35) • When we create an ASP .Net page we are creating source code for a .Net class • Pages are compiled and stored in a temp folder on the web server • Unlike classic ASP the page will not be recompiled again, unless we disable dynamic compilation • This allows support for thousands of simultaneous users

  24. Code Behind vs Single File Pages • In a single file ASP .Net page, a single file contains both the page code and page controls • A code behind has the page code in a separate file • Which should you use? (p45)

  25. New Features of VS2008 • Javascript Intellisense/Debugging support • Nested Master Pages • Enhanced CSS Management • Multi-targeting support. • New data controls. • MUCH improved designer.

  26. Other ASP .Net Resources • MSDN Web site • Sra.skillport.com • MSDN Virtual Labs • MS Tech-ED Developer presentations on my SRA portal site • VS 2008 Training Kit • http://www.asp.net/downloads/ • http://www.codeplex.com/aspnet

  27. Optional Take Home Class Exercise • MSDN Virtual Lab “Building web Applications with Visual Studio 2008” • Event ID: 1032360368 (msevents.microsoft.com) • This lab is included in the VS2008 Training Kit mentioned on previous slide so this can be done offline on your pc workstation

  28. Next Week • Q&A • Week 1 Review • Homework Review (Take home lab) • Chapters 16-18 (Data Access, ADO .Net, and LINQ to SQL)

  29. Questions ? • Feel free to contact me at noah_subrin@sra.com • Please use the class portal site on the SRA portal to post question or other discussions that may be of interest to the class. • Thank you!

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