Beginning ASP.NET 4.5 in CSharp and VB Opsylum

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300 x CHAPTER 8 USER CONTROLS ImageUrl="~/Images/Banner486x60.gif" /> 6. Switch back to the Code Behind of the control and add the following bolded code to the Page_ Load handler. In C#, the handler should already be there. In Visual Basic, you can choose (Page Events) from the left drop-down list at the top of the Document Window and Load from the right drop-down list to set up the handler, or you can double-click the user control in Design View. VB.NET Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load Select Case DisplayDirection Case Direction.Horizontal HorizontalPanel.Visible = True VerticalPanel.Visible = False Case Direction.Vertical VerticalPanel.Visible = True HorizontalPanel.Visible = False End Select End Sub C# protected void Page_Load(object sender, EventArgs e) { switch (DisplayDirection) { case Direction.Horizontal: HorizontalPanel.Visible = true; VerticalPanel.Visible = false; break; case Direction.Vertical: VerticalPanel.Visible = true; HorizontalPanel.Visible = false; break; } } 7. Save and close the two files that make up the user control because you’re done with them for now. 8. Open up the master page file once more in Markup View and locate the user control declaration. Right after the runat="server" attribute, add the following DisplayDirection attribute that sets the correct image type: IntelliSense will help you pick the right DisplayDirection from the list. If you don’t get IntelliSense, wait a few seconds until VS has caught up with all the changes. Alternatively, save and close all open files (or restart VS), open the master page, and try again. 9. Save all changes and request Default.aspx in the browser. Note that the right sidebar area now contains the horizontal image, breaking the layout a little because the image is too wide for the sidebar. If you don’t see the banner appear at all, check your system for ad-blocking software that may stop the banner image from appearing.
Adding Logic to Your User Controls x 301 10. Switch back to the master page and change the DisplayDirection from Horizontal to Vertical. Save your changes and refresh the page in the browser. The sidebar should now display the vertical banner, as shown in Figure 8-9. FIGURE 8-9 11. Open the AboutUs.aspx page from the About folder in Markup View. If you don’t have that file, create it first. In the cpMainContent ContentPlaceHolder, add some text describing you or your organization and the reason you created the site. Switch to Design View and drop the Banner .ascx control from the Solution Explorer onto the design surface, right below the text you just added. VS detects the user control in the master page called Banner1 and assigns the ID of Banner2 to the user control you just dropped. Notice how you see four banners in Design View; two come from the Banner control in the master page and the other two come from the Banner control in the About Us page itself. At run time, two of them will be hidden. 12. Select the user control you just added in Design View, open its Properties Grid, and set the DisplayDirection to Horizontal. 13. Save all your changes and then press Ctrl+F5 to open the About Us page in your browser. In addition to the banner in the right sidebar, you should now also see the horizontal banner appear in the content area. How It Works The property called DisplayDirection gives your user control some extra behavior. Pages using the control should now set the DisplayDirection like this:
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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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Using ASP.NET AJAX in Your Projects
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Using Web Services and Page Methods
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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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402 x CHAPTER 11 JQUERY In the foll
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406 x CHAPTER 11 JQUERY jQuery goes
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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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14 LINQ and the ADO.NET Entity Fram
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Introducing LINQ x 499 surprise tha
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Mapping Your Data Model to an Objec
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Introducing Query Syntax x 507 and
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Introducing Query Syntax x 509 Wher
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Introducing Query Syntax x 511 Firs
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Introducing Query Syntax x 513 diff
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Introducing Query Syntax x 515 Orde
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Using Server Controls with LINQ Que
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Summary x 551 model. Combined with
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15 Working with Data — Advanced T
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Formatting Your Controls Using Styl
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Handling Events x 563 background-im
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Handling Events x 565 4. Make sure
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Handling Events x 567 The PreRender
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Handling Events x 569 Button1_Click
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Handling Events x 571 Select Case e
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Handling Events x 573 The RowDataBo
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Handling Events x 575 These classes
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Handling Events x 577 8. Save all y
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Hand-Coding Data Access Code x 579
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Caching x 589 In all the database e
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Caching x 591 Output Caching With o
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Caching x 593 Programmatic Caching
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Caching x 595 ‰ SummaryLabel ‰
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Caching x 597 } font-style: italic;
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Caching x 599 expiration date, whic
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Summary x 601 EXERCISES 1. Imagine
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16 Security in Your ASP.NET 4.5 Web
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The Role Manager x 627 such as the
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The Role Manager x 629 1 . From wit
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The Role Manager x 631 FIGURE 16-19
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The Role Manager x 633 2. Save and
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The Role Manager x 635 Management s
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The Role Manager x 637 Alternativel
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The Role Manager x 639 } } case Lis
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Summary x 641 SUMMARY You can imple
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17 Personalizing Websites WHAT YOU
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Understanding Profile x 645 In the
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Understanding Profile x 647 You can
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Understanding Profile x 649 5. To t
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Understanding Profile x 651 To defi
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Understanding Profile x 653 press t
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Understanding Profile x 655 10. Dou
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Understanding Profile x 657 1. In M
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Understanding Profile x 659 e As Ev
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Understanding Profile x 661 That’
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Understanding Profile x 663 By clic
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Understanding Profile x 665 sent to
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Understanding Profile x 667 5. From
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Understanding Profile x 669 10. Ent
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Other Ways of Dealing with Profile
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Summary x 675 How It Works Much of
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680 x CHAPTER 18 EXCEPTION HANDLING
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730 x CHAPTER 19 DEPLOYING YOUR WEB
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790 x APPENDIX A EXERCISE ANSWERS }
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BConfiguring SQL Server 2012 So far
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Configuring SQL Server 2012 x 795 C
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Configuring SQL Server 2012 x 797 Y
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allowAnonymous attribute - ASP.NET
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Basic Settings mode - C# implementi
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input controls - handling input co
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text strings - types validation con
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validation controls- ViewState coll
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web services - Where clause flow of
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