Beginning ASP.NET 4.5 in CSharp and VB Opsylum

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208 x CHAPTER 6 CREATING CONSISTENT LOOKING WEBSITES The first section shows you how to create a master page that defines the general look and feel of a page. The ASPX pages in your site can then use this master page without the need to repeat the general layout. The remaining sections of this chapter build on top of this master page. CONSISTENT PAGE LAYOUT WITH MASTER PAGES With most websites, only part of the page changes when you go from one page to another. The parts that don’t change usually include common regions like the header, a menu, and the footer. To create web pages with a consistent layout, you need a way to define these relatively static regions in a single template file. Versions of ASP.NET prior to 2.0 did not have a template solution, so you were forced to duplicate your page layout on every single page in the website, or resort to weird programming tricks. Fortunately, this is no longer the case due to master pages. The biggest benefit of master pages is that they enable you to define the look and feel of all the pages in your site in a single location. This means that if you want to change the layout of your site—for instance, if you want to move the menu from the left to the right—you need to modify only the master page, and the pages based on this master pick up the changes automatically. When master pages were introduced in ASP.NET 2.0, they were quickly embraced by the developer community as the template solution for ASP.NET pages because they are very easy to use. Even better, VS has great design-time support, because it enables you to create and view your pages at design time during development, rather than only in the browser at run time. To some extent, a master page looks like a normal ASPX page. It contains static HTML such as the , , and elements, and it can also contain other HTML and ASP.NET Server Controls. Inside the master page, you set up the markup that you want to repeat on every page, like the general structure of the page and the menu. However, a master page is not a true ASPX page and cannot be requested in the browser directly; it only serves as the template on which real web pages—called content pages—are based. Instead of the @ Page directive that you saw in Chapter 4, a master page uses an @ Master directive that identifies the file as a master page: VB.NET C# Just like a normal ASPX page, a master page can have a Code Behind file, identified by its CodeFile and Inherits attributes:
Consistent Page Layout with Master Pages x 209 VB.NET C# To create regions that content pages can fill in, you define ContentPlaceHolder controls in your page like this: You can create as many placeholders as you like, although you usually need only a few to create a flexible page layout. The content pages, which are essentially normal ASPX files, without the code that they’re going to take from the master page, are connected to a master page using the MasterPageFile attribute of the Page directive: VB.NET C# The page-specific content is then put inside a Content control that points to the relevant ContentPlaceHolder: Note that the ContentPlaceHolderID attribute of the Content control points to the ContentPlaceHolder that is defined in the master page. Right now it points to the default name of ContentPlaceHolder1, but in a later exercise you see how to change this. At run time, when the page is requested, the markup from the master page and the content page are merged, processed, and sent to the browser. Figure 6-1 shows a diagram of the master page with just one ContentPlaceHolder and the content page that results in the final page that is sent to the browser.
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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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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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Using the Navigation Controls x 259
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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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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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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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406 x CHAPTER 11 JQUERY jQuery goes
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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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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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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 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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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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Configuring Application Services x
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allowAnonymous attribute - ASP.NET
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Basic Settings mode - C# implementi
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decimal data type - DynamicEnableDe
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input controls - handling input co
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Microsoft Developer Network - New S
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Profile.GetProfile - ReadAllText me
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RoleGroups - server side configurin
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SQL statement - styling installing,
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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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