Beginning Ajax With ASP.NET (2006).pdf

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6 What Is Built into ASP.NET ASP.NET 2.0 contains an incredible amount of enhancements over ASP.NET 1.0 and 1.1. The ASP.NET team has attempted to address various areas that required improvement in previous versions, and the inclusion of Ajax-style functionality is one of those areas. ASP.NET 2.0 contains a technology called Asynchronous Client Script Callbacks, or simply callbacks for a shortened name. As the name suggests, this offers the ability for ASP.NET to directly support the inclusion of JavaScript code that enables asynchronous calls to the server for processing — that is, to execute a server method asynchronously from within the browser and have ASP.NET instruct the browser to execute a JavaScript callback method when the server method completes. In this chapter, you take a look at: ❑ Server controls included with ASP.NET V2.0 that support asynchronous callback functionality ❑ Enabling your pages to support asynchronous behavior using callbacks in ASP.NET V2.0 ❑ Using advanced techniques to develop controls that support asynchronous behavior, using client callbacks Out-of-the-Box Controls Before you delve into the fundamentals and implementation of these features, it is important to note that some web controls that ship with ASP.NET come with the ability to support callback functionality. Specifically, these controls are the: ❑ ❑ ❑ TreeView GridView DetailsView These controls come with simple boolean properties that enable the use of asynchronous callbacks in a browser-friendly way, without the need to know or write any JavaScript at all.
Chapter 6 Again, before the chapter gets too technical, have a look at how easy it is to make use of Asynchronous Client Script Callbacks by using some of the controls that support this technology natively. TreeView Control The TreeView control allows hierarchical navigation over any datasource. A very common use of this control is to act as a navigation control for web sites. This is easily achieved by binding the TreeView control to a SiteMapDataSource control. However, for the purposes of this example you are interested in the built-in ability to provide asynchronous callback functionality to your applications. Examine the following simple ASP.NET page: Try It Out TreeView Control Utilizing Asynchronous Client Script Callback Support Treeview Asynchronous Example This page contains a TreeView control and an XmlDataSource control. The XmlDataSource control provides data from an XML file named TestXMLFile.xml. This file has the following contents: 128
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Beginning Ajax with ASP.NET Wallace
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Beginning Ajax with ASP.NET Wallace
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Executive Editor Bob Elliott Senior
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About the Authors Wallace B. “Wal
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Acknowledgments It is truly interes
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Contents Manipulating the Style She
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Contents Chapter 7: Ajax.NET Profes
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Contents Chapter 11: Atlas Controls
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Introduction Thank you for purchasi
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Tips, hints, tricks, and asides to
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1 Introduction to Ajax on ASP.NET O
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Introduction to Ajax on ASP.NET Mic
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Introduction to Ajax on ASP.NET ❑
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Introduction to Ajax on ASP.NET ❑
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Who’s Using Ajax? Introduction to
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2 Introduction to DHTML Dynamic HTM
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Writing Your First Block of JavaScr
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Introduction to DHTML document.writ
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Introduction to DHTML Figure 2-3 Ex
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Introduction to DHTML The return ke
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Introduction to DHTML var isArrowLe
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Using the innerHTML Property Introd
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To illustrate this behavior, the ne
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Introduction to DHTML Now that you
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Chapter 3 From Static to Dynamic
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Chapter 3 Within the section of th
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Chapter 3 Just a reminder of what w
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Chapter 3 /* */ Datatypes These are
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Chapter 3 Composite types are requi
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Chapter 3 These sets of operators a
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Chapter 3 var y = 0; do { y = y + 1
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Chapter 3 Figure 3-1 shows the resu
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Chapter 3 This allows you to assign
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Chapter 3 Because the constructor i
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Chapter 3 This produces the result
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Chapter 3 window navigator location
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Chapter 3 There are four levels of
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Chapter 3 var featuresLevel1 = [“
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Chapter 3 Take a look at a simple e
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Chapter 3 For this particular examp
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Chapter 3 The method getElementById
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Chapter 3 Cloning a Node This
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Chapter 3 Node Type Type Descriptio
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Chapter 3 Figure 3-7 Figure 3-8 68
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Chapter 3 The DOM, Styles, and CSS
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Chapter 3 Try It Out Modifying a St
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Chapter 3 which includes a script f
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Page 160 and 161: method. This method allows a develo
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8 Anatomy of Ajax.NET Pro Library T
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Anatomy of Ajax.NET Pro Library Fig
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Anatomy of Ajax.NET Pro Library Mas
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Line 25 creates the actual JavaScri
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Anatomy of Ajax.NET Pro Library 09.
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Anatomy of Ajax.NET Pro Library 19.
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Anatomy of Ajax.NET Pro Library 105
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What Is an Ajax.NET Pro Converter?
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9 Other Ajax Frameworks for .NET Aj
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Testing for Features Using the Sari
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Attaching an event to check for the
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The framework contains supporting c
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Other Ajax Frameworks for .NET lock
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Panels versus Custom Controls Once
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Other Ajax Frameworks for .NET cust
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Creating the Solution 1. Open Visua
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Other Ajax Frameworks for .NET Not
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Other Ajax Frameworks for .NET Swit
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Other Ajax Frameworks for .NET Figu
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Other Ajax Frameworks for .NET Imag
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Other Ajax Frameworks for .NET } }
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Other Ajax Frameworks for .NET feat
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Other Ajax Frameworks for .NET bord
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txtTitle_TextChanged event and will
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Other Ajax Frameworks for .NET Fina
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Other Ajax Frameworks for .NET
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Other Ajax Frameworks for .NET Fina
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Other Ajax Frameworks for .NET cont
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Other Ajax Frameworks for .NET The
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Other Ajax Frameworks for .NET back
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On the server side, ComfortASP.NET
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Chapter 10 ❑ Client-side componen
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Chapter 10 Now that you have heard
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Chapter 10 This code shows how an e
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Chapter 10 OnServerException Examin
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Chapter 10 } function ServerAddRetu
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Chapter 10 DataRow var strRowsInfo
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Chapter 10 { } return (objComplexCu
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Chapter 10 New Time:
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Chapter 10 function CallInternalWe
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Chapter 10 Number The Number class
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Chapter 10 The Sys.Data.DataColumn
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Chapter 10 The following is some co
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Chapter 10 NamespaceName.ClassName.
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Chapter 10 Inheritance Inheritance
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Chapter 10 Try It Out Implementing
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Chapter 10 Figure 10-14 Enumeration
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Chapter 10 Figure 10-16 282
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Chapter 10 Summary In this chapter,
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Chapter 11 var associatedElement =
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Chapter 11 Setting the EnablePartia
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Chapter 11 Just to show that there
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Chapter 11 How It Works In this exa
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Chapter 11 Now that you have seen t
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Chapter 11 Try It Out You will noti
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Chapter 11 listView.set_layoutTempl
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Chapter 11 Binding Directions As pr
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Chapter 11 3. The validationErrorLa
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Chapter 11 Regex Validation Exam
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Chapter 11
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Chapter 11 Hide Show
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12 Atlas Integration with ASP.NET S
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Atlas Integration with ASP.NET Serv
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❑ ❑ ScriptFolder — In this co
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Try It Out Retrieving Profile Prope
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❑ A special connectionString is u
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13 Debugging Debugging is the art o
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Debugging Figure 13-2 In either cas
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Using Alert Statements Starting wit
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Try It Out Client-Side Script Debug
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Debugging Figure 13-9 4. In the Scr
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Debugging Figure 13-12 Right-clicki
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So far, you have used F10 to advanc
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Debugging Debugger Keyword Test Pa
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Debugging Figure 13-16 Try It Out U
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Debugging The Command window will h
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Debugging Although this section of
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install the Venkman tool within Fir
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Debugging true); xmlHttpObj.open(
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Debugging TestFiddler.aspx.cs — C
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Debugging Figure 13-25 This is usef
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Debugging using System.Collections;
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Debugging Replace the text button%2
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A XSLT Commands This appendix provi
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XSLT Commands Element preserve-spac
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Boolean XSLT Commands The boolean f
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XSLT Commands Name adjust-dateTime-
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XSLT Commands Name Description subs
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Index
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AjaxPro.AjaxMethod() attribute Ajax
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attributes (continued) attributes (
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Command window Command window, 346-
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document-uri(node) function (XSLT)
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frameworks frameworks Ajax.NET Pro
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functions (XSLT) (continued) functi
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JavaScript (continued) JavaScript (
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libraries (continued) libraries (co
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methods (XSLT) (continued) methods
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Microsoft Atlas project (continued)
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port port 80, 103 port numbers in c
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server-side frameworks (continued)
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value-of element (XSLT) value-of el
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XSLT elements (continued) XSLT elem
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