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Professional ASP.NET 3.5 in C# and Visual Basic Part 147

Professional ASP.NET 3.5 in C# and Visual Basic Part 147. Building on the revolutionary ASP.NET 2.0 release, ASP.NET 3.5 adds several key new developer features including AJAX, LINQ, and a new CSS designer in Visual Web Developer 2008. The dramatic reduction in code that developers realized from the more than 50 new server controls in ASP.NET 2.0 now allows developers the time to make their applications more interactive with AJAX, to work with data in their preferred language with LINQ, and to build visually attractive and consistent standards-based sites with CSS. . | Chapter 31 Configuration The browser definition file format defines each browser as an entity self-contained in a browser XML element. Each browser has its own ID that describes a class of browser and its parent class. The root node of a browser definition file is the browsers element and multiple browser entries identified using the id attribute of the browser element. Listing 31-15 shows a section of the ie.browser file. Listing 31-15 Content of lE.browser file browsers browser id IE parentID Mozilla identification userAgent match AMozilla A C c ompatible s MSIE version major d minor . d letters w extra A userAgent nonMatch Opera userAgent nonMatch Go .Web userAgent nonMatch Windows CE userAgent nonMatch EudoraWeb identification capture capture capabilities capability name browser value IE capability name extra value extra capability name isColor value true capability name letters value letters capability name majorversion value major capability name minorversion value minor capability name screenBitDepth value 8 capability name type value IE major capability name version value version capabilities browser The id attribute of the browser element uniquely identifies the class of browser. The parentiD attribute of the browser element specifies the unique ID of the parent browser class. Both the id and the parentiD are required values. Before running an ASP.NET application the framework compiles all the browser definitions into an assembly and installs the compilation in GAC. When the browser definition files at the system level are modified they do not automatically reflect the change in each and every ASP.NET application. Therefore it becomes the responsibility of the developer or the installation tool to update this information. You can send the updated browser information to all the ASP.NET applications by running the aspnet_regbrowsers.exe utility provided by the framework. When the aspnet_regbrowsers.exe utility is called the browser information is recompiled