Beginning ASP.NET 4.5 in CSharp and VB Opsylum

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14 LINQ and the ADO.NET Entity Framework WHAT YOU WILL LEARN IN THIS CHAPTER: ‰ What LINQ is and what its syntax looks like ‰ The different forms of LINQ that are available and when they are appropriate to use ‰ How to use the ADO.NET Entity Framework ‰ How to use the EntityDataSource control to access the ADO.NET Entity Framework ‰ How to use the ListView and DataPager controls WROX.COM CODE DOWNLOADS FOR THIS CHAPTER You can find the wrox.com code downloads for this chapter on the Download Code tab at www.wrox.com/remtitle.cgi?isbn=1118311809. The code is in the Chapter 14 download. Language-Integrated Query (LINQ) is the query language that is tightly integrated with the programming languages used in the .NET Framework. LINQ enables you to query data from within .NET programming languages in the same way that SQL enables you to query data in a database. In fact, the LINQ syntax has been modeled partially after the SQL language, making it easier for programmers familiar with SQL to get started with LINQ. LINQ comes in a few different implementations, enabling you to access and query a wide variety of sources, including in-memory data, XML files, .NET DataSets, and databases from your VB.NET or C# code. In the next section you get a brief overview of the main LINQ pillars. The remainder of this chapter focuses on the LINQ syntax and on the ADO.NET Entity Framework (EF), a technology that enables you to work with databases without writing a lot
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BEGINNING ASP.NET 4.5 FOREWORD . .
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BEGINNING ASP.NET 4.5 IN C# AND VB
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—To Niek
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CREDITS Acquisitions Editor Mary Ja
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CONTENTS FOREWORD INTRODUCTION xxxi
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CONTENTS Working with Files in Your
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CONTENTS Not All Controls Rely on V
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CONTENTS Skins 245 Creating a Skin
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CONTENTS Providing Feedback to User
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CONTENTS Single Item Controls 455 P
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CONTENTS Authentication: How Can Yo
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CONTENTS Introducing Bundling and M
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INTRODUCTION TO BUILD EFFECTIVE AND
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INTRODUCTION ‰ Chapter 4, “Work
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INTRODUCTION HOW THIS BOOK IS STRUC
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INTRODUCTION ‰ Code shown for the
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INTRODUCTION FIGURE I-2 The Site fo
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BEGINNING ASP.NET 4.5
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2 x CHAPTER 1 GETTING STARTED WITH
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34 x CHAPTER 2 BUILDING AN ASP.NET
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66 x CHAPTER 3 DESIGNING YOUR WEB P
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100 x CHAPTER 3 DESIGNING YOUR WEB
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4Working with ASP.NET Server Contro
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Introduction to Server Controls x 1
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Introduction to Server Controls x 1
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A Closer Look at ASP.NET Server Con
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A Closer Look at ASP.NET Server Con
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Types of Controls x 117 FIGURE 4-4
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Types of Controls x 119 The Smart T
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Types of Controls x 121 } DropDownL
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Types of Controls x 123 Container C
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Types of Controls x 125 Note that t
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Types of Controls x 127 FIGURE 4-12
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Types of Controls x 129 FinishButto
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Types of Controls x 131 FileUpload
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Types of Controls x 133 Validation
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The ASP.NET State Engine x 135 serv
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The ASP.NET State Engine x 137 FIGU
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The ASP.NET State Engine x 139 4. A
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Practical Tips on Working with Cont
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Summary x 143 ⊲ WHAT YOU LEARNED
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146 x CHAPTER 5 PROGRAMMING YOUR AS
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6Creating Consistent Looking Websit
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Consistent Page Layout with Master
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Using a Centralized Base Page x 219
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Themes x 229 With this exported tem
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Themes x 231 Replace Theme with Sty
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Themes x 233 type="text/css" rel=
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Themes x 235 ASP.NET themes are not
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Themes x 237 FIGURE 6-19 How It Wor
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Themes x 239 VB.NET Dim myCookie As
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Themes x 241 FIGURE 6-21 Within the
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Themes x 243 C# preferredTheme.Valu
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Skins x 245 a cookie called Preferr
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Skins x 247 3. In the Extension box
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Practical Tips on Creating Consiste
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Summary x 251 The imaginary CSS cla
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7Navigation WHAT YOU WILL LEARN IN
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Different Ways to Move Around Your
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Using the Navigation Controls x 257
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Programmatic Redirection x 277 Redi
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Programmatic Redirection x 279 How
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Practical Tips on Navigation x 281
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286 x CHAPTER 8 USER CONTROLS advan
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288 x CHAPTER 8 USER CONTROLS TRY I
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290 x CHAPTER 8 USER CONTROLS How I
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292 x CHAPTER 8 USER CONTROLS 4. Sw
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294 x CHAPTER 8 USER CONTROLS Note:
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296 x CHAPTER 8 USER CONTROLS ASP.N
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298 x CHAPTER 8 USER CONTROLS The c
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300 x CHAPTER 8 USER CONTROLS Image
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302 x CHAPTER 8 USER CONTROLS When
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304 x CHAPTER 8 USER CONTROLS If _n
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306 x CHAPTER 8 USER CONTROLS How I
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308 x CHAPTER 8 USER CONTROLS This
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310 x CHAPTER 8 USER CONTROLS ⊲ W
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312 x CHAPTER 9 VALIDATING USER INP
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10 ASP.NET AJAX WHAT YOU WILL LEARN
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Using ASP.NET AJAX in Your Projects
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Using Web Services and Page Methods
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Practical Ajax Tips x 381 How It Wo
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386 x CHAPTER 11 JQUERY Fortunately
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388 x CHAPTER 11 JQUERY FIGURE 11-1
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390 x CHAPTER 11 JQUERY This lists
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392 x CHAPTER 11 JQUERY In addition
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394 x CHAPTER 11 JQUERY COMMON MIST
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396 x CHAPTER 11 JQUERY can apply v
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398 x CHAPTER 11 JQUERY The ID Sele
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400 x CHAPTER 11 JQUERY The first s
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402 x CHAPTER 11 JQUERY In the foll
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404 x CHAPTER 11 JQUERY MODIFYING T
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406 x CHAPTER 11 JQUERY jQuery goes
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408 x CHAPTER 11 JQUERY Common Mist
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410 x CHAPTER 11 JQUERY Now that yo
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412 x CHAPTER 11 JQUERY 8. Open the
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414 x CHAPTER 11 JQUERY As you saw
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416 x CHAPTER 11 JQUERY 7. Save you
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418 x CHAPTER 11 JQUERY look at jQu
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420 x CHAPTER 11 JQUERY ⊲ WHAT YO
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422 x CHAPTER 12 INTRODUCTION TO DA
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546 x CHAPTER 14 LINQ AND THE ADO.N
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554 x CHAPTER 15 WORKING WITH DATA
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604 x CHAPTER 16 SECURITY IN YOUR A
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644 x CHAPTER 17 PERSONALIZING WEBS
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18 Exception Handling, Debugging, a
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Exception Handling x 681 VB.NET mai
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Exception Handling x 683 is wrapped
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Exception Handling x 685 In the fol
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Exception Handling x 687 7. Go back
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Exception Handling x 689 thrown. On
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Exception Handling x 691 ‰ On—E
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Exception Handling x 693 4. Save al
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Exception Handling x 695 COMMON MIS
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Exception Handling x 697 you define
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The Basics of Debugging x 699 exerc
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Tools Support for Debugging x 701 H
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Tools Support for Debugging x 703 w
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Tools Support for Debugging x 705 I
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Tools Support for Debugging x 707 F
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Debugging Client-Side Script x 709
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Debugging Client-Side Script x 711
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Debugging with the Page Inspector x
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Tracing Your ASP.NET Web Pages x 71
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Practical Debugging Tips x 725 Trac
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Summary x 727 EXERCISES 1. What’s
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19 Deploying Your Website WHAT YOU
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Preparing Your Website for Deployme
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Introducing Bundling and Minificati
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Copying Your Website x 741 COPYING
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Copying Your Website x 743 FIGURE 1
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Copying Your Website x 745 Besides
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Running Your Site Under IIS x 747 a
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Running Your Site Under IIS x 749 I
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Running Your Site Under IIS x 751 C
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Running Your Site Under IIS x 753 A
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Running Your Site Under IIS x 755 4
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Running Your Site Under IIS x 757 i
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Moving Data to a Remote Server x 75
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Moving Data to a Remote Server x 76
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The Deployment Checklist x 763 Th
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Summary x 765 ‰ Professional LINQ
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AExercise Answers CHAPTER 1 Exercis
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Chapter 3 x 769 CHAPTER 3 Exercise
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Chapter 6 x 771 data type. Because
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Chapter 7 x 773 Exercise 6 Solution
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Chapter 9 x 775 } { } ViewState["Di
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Chapter 10 x 777 CHAPTER 10 Exercis
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Chapter 11 x 779 they hover over it
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Chapter 13 x 781 Exercise 4 Solutio
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Chapter 14 x 783 } GridView1.DataBi
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Chapter 15 x 785 you need to store
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Chapter 16 x 787 with an error mess
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Chapter 17 x 789 Handles Me.PreInit
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Chapter 18 x 791 ErrorMessage.Text
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794 x APPENDIX B CONFIGURING SQL SE
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INDEX Symbols ~ Syntax, 256 A absol
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ASP.NET Server Controls - base page
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cache dependency - client side LINQ
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CompositeScript property - CreateUs
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data controls - debugging reliance
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DynamicLayout property - errors Dyn
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fadeIn - element F fadeIn() effect
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hard-coded settings - IIS Express h
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Internet Explorer - keys exceptions
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logical structure - methods logical
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Planet Wrox - programming New Web S
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photos - element photos, uploading
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eadOnly attribute - Role Manager re
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Server.MapPath - SQL Server 2012 Ex
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submit event - Text property the Pl
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uniform resource locator - validati
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virtual paths - web server virtual
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WHERE clause - zip files WHERE clau
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