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Chapter 4Doing More withC# and ASP.NETCopyright © 2009 by The McGraw-Hill Companies. Click here for terms of use.85
86ASP.NET 3.5: A Beginner’s GuideKey Skills & Concepts●●●●●EventsSubroutines and functionsObject-oriented programming (OOP)Creating classesAccessing C# classes from a web applicationBecause you need just a little C# to successfully work with ASP.NET does not mean thatyou cannot use the full power of C# with your ASP.NET applications. This chapterdelves a little deeper into the events that can be generated by different ASP.NET tools andhandled by C#, and also shows how to access a full C# class from the partial classes madeup of C# and ASP.NET. However, neither the previous chapter nor this chapter does morethan touch the surface of what can be done with C#. To learn more about C#, see C# 3.0:A Beginner’s Guide by Herbert Schildt (McGraw-Hill, 2009).Events and Handling ThemIn the previous chapters, you have seen a couple of different ways that C# handles eventsconnected to ASP.NET forms either on loading a page or with a button form. However,different ASP.NET objects generate different kinds of events, and this section examineshow this is done and provides some examples aside from those you’ve seen.Adding ASP.NET Controls Events to C#Using Microsoft Visual Studio 2008 makes adding ASP.NET event handlers to C# codevery easy. Ironically, rather than generating C# code from the ASP.NET Source mode,you do it from the Design mode. This next example shows how to generate the C# eventhandlers using the following steps:1. Open a new web site saving it as the application named EventWork.2. Change the mode to Design, and drag a TextBox, Button, and ListBox from theToolbox to the editor and use the labels shown in Figures 4-1 to 4-3.
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ASP.NET 3.5A Beginner’s Guide
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ASP.NET 3.5A Beginner’s GuideWill
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This book is dedicated to Ricky, Ol
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Contents at a GlancePART I Getting
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For more information about this tit
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Contents xiUsing HTML Forms Interac
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Contents xiiiCREATE: The SQL Comman
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Contents xv17 ASP.NET Ajax . . . .
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AcknowledgmentsThis book was greatl
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IntroductionWhat distinguishes the
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Introduction xxiWhat This Book Cove
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Introduction xxiiiChapter 7: CSS fo
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Chapter 17: ASP.NET Ajax One of the
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Part IGetting StartedCopyright © 2
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Chapter 1Introduction toASP.NET 3.5
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Chapter 1: Introduction to ASP.NET
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Chapter 2ASP.NET 3.5 Toolsand Devel
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Chapter 7CSS for ASP.NET 3.5Page Fo
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Chapter 8Control Events andEvent Ha
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Chapter 9Validation ControlsCopyrig
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Chapter 10Rich Data ControlsCopyrig
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Part IIIASP.NET and DatabasesCopyri
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Chapter 11A SQL PrimerCopyright ©
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Chapter 11: A SQL Primer 271the dat
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Chapter 11: A SQL Primer 273C# inst
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Chapter 11: A SQL Primer 275Specify
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Chapter 11: A SQL Primer 277ASP.NET
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Chapter 11: A SQL Primer 279Looking
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Chapter 11: A SQL Primer 281Figure
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Chapter 11: A SQL Primer 283The sta
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Chapter 11: A SQL Primer 285That is
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Chapter 12ADO.NET:Hello DatabaseCop
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Chapter 12: ADO.NET: Hello Database
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Chapter 13Data BindingCopyright ©
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Chapter 13: Data Binding 331On the
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Chapter 14LINQCopyright © 2009 by
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Chapter 14: LINQ 355TIPTry ThisThis
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Chapter 14: LINQ 357Figure 14-2 Add
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Chapter 14: LINQ 359Figure 14-5 Add
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Chapter 14: LINQ 361Figure 14-7 Set
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Chapter 14: LINQ 363Figure 14-9 Set
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Chapter 14: LINQ 365As you can see,
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Chapter 14: LINQ 367Basic LINQC# CS
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Chapter 14: LINQ 369are used with a
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Chapter 15FilesCopyright © 2009 by
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Chapter 15: Files 373The bulk of th
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Chapter 15: Files 375Ask the Expert
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Chapter 15: Files 385The only cauti
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Chapter 15: Files 387Figure 15-7 Vi
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Chapter 16SecurityCopyright © 2009
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Chapter 16: Security 391certain peo
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Chapter 16: Security 393So while yo
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Chapter 16: Security 395ASP.NET Log
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Chapter 16: Security 397Figure 16-4
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Chapter 16: Security 399Try This A
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Chapter 16: Security 413Next, you n
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Chapter 16: Security 41512. With th
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Chapter 16: Security 417SummaryWeb
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Chapter 17ASP.NET AjaxCopyright ©
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Chapter 17: ASP.NET Ajax 421uses st
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Chapter 17: ASP.NET Ajax 423Try Thi
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Chapter 17: ASP.NET Ajax 42910. Onc
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Chapter 17: ASP.NET Ajax 431NOTEBy
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Chapter 17: ASP.NET Ajax 433of the
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Chapter 17: ASP.NET Ajax 435body{ba
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Chapter 17: ASP.NET Ajax 437Figure
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Chapter 17: ASP.NET Ajax 439Summary
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Index< > (arrow brackets), 36Aacces
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Index 443ConVarASP.NET, 55C#, 56coo
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Index 445IntelliSense, 27and events
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Index 447StreamReader, 381StreamWri
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