asp.net qr code generator Introducing the ASP.NET 2.0 Web Site in .NET framework

Encode QR Code 2d barcode in .NET framework Introducing the ASP.NET 2.0 Web Site

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Introducing the ASP.NET 2.0 Web Site
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3. If you want to separate your server-side code from your client-side code on a Web page, what programming model should you implement (Choose one.) A. Separation model B. Code-Behind model C. In-Line model D. ClientServer model 4. Joe created a new Web site using Visual Studio 2005, setting the Web site type to File, and the programming language to C#. Later, Joe received an elaborate Web page from his vendor, which consisted of the Vendor.aspx file and the Ven dor.aspx.vb code-behind page. What must Joe do to use these files (Choose one.) A. Joe can simply add the files into the Web site, because ASP.NET 2.0 sup ports Web sites that have Web pages that were programmed with different languages. B. The Vendor.aspx file will work, but Joe must rewrite the code-behind page using C#. C. Both files must be rewritten in C#. D. Joe must create a new Web site that contains these files and set a Web ref erence to the new site.
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Lesson 3: Working with Web Configuration Files
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Lesson 3: Working with Web Configuration Files
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Web sites are configured based on a hierarchy of XML configuration files, as shown in Figure 1-9. The first configuration file is the Machine.config file. This file is located in the configuration folder for the version of the .NET Framework installed on the com puter, and is usually found at the following location: %WINDIR%\Microsoft.NET\Framework\version\Config\machine.config The Machine.config file contains settings for all .NET application types, such as Windows, Console, ClassLibrary, and Web applications. These settings are global to the machine. Some of the settings in the Machine.config file can be overridden by set tings in Web.config files that are in the hierarchy, while other settings are more global in nature. The global ones complete the .NET Framework, so they are protected and cannot be overridden by the Web.config files.
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After this lesson, you will be able to:
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Understand the configuration file hierarchy. Use the GUI configuration tool to make changes to the configuration files.
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Estimated lesson time: 20 minutes
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The next file in the hierarchy is the Root Web.config file, which is located in the same directory as the Machine.config file. This file contains default Web server settings, some of which can override settings in the Machine.config file.
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ASP.NET Configuration Hierarchy Subdirectory* web.config at /sales/reports web.config at /hr/benefits
Web App*
web.config at /sales
web.config at /hr
Web Site*
web.config at / (root)
Root Default Web
web.config at config
Global Machine
machine.config at config
*Optional
Figure 1-9
The configuration file hierarchy.
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Introducing the ASP.NET 2.0 Web Site
At the root directory of each Web site, you have the ability to add a Web.config file. This file is optional and can contain additional settings for the Web site as well as set ting overrides. In each Web application, you can optionally have a Web.config file to provide more settings and override settings. Finally, each subdirectory in a Web appli cation can optionally have a Web.config file where only a subset of the settings is valid.
Processing the Configuration Files
When you initially run your Web application, the runtime builds a cache of the effec tive settings for your Web application by flattening the layers of configuration files as follows: 1. The Machine.config file settings are retrieved. 2. The settings from the root Web.config file are added to the caches, overwriting any conflicting settings that were created earlier while reading the Machine.con fig file. 3. If there is a Web.config file at the root of the Web site, this file is read into the cache, overwriting existing entries. 4. If there is a Web.config file at the Web application, it is read into the caches, also overwriting any existing settings. The resulting cache contains the settings for this Web site. 5. If you have subdirectories in your Web application, the subdirectories can have a Web.conifg file that includes settings that are specific to the files and folders that are contained within this folder. To calculate the effective settings for the folder, the Web site settings are read (steps 1-4), and then this Web.config is read into the cache for this folder, overwriting (thereby overriding) any existing settings.
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