文件名称:
Pro Silverlight2 in CSharp 2008
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文件大小: 11mb
下载次数: 0
上传时间: 2009-02-26
详细说明： Silverlight is a framework for building rich, browser-hosted applications that run on a variety of operating systems. Silverlight works its magic through a browser plug-in. When you surf to a web page that includes some Silverlight content, this browser plug-in runs, executes the code, and renders that content in a specifically designated region of the page. The important part is that the Silverlight plug-in provides a far richer environment than the traditional blend of HTML and JavaScript that powers ordinary web pages. Used c arefully and artfully, you can create Silverlight pages that have interactive graphics, use vector animations, and play video and sound files. If this all sounds eerily familiar, it’s because the same trick has been tried before. Several other technologies use a plug-in to stretch the bounds of the browser, including Java, ActiveX, Shockwave, and (most successfully) Adobe Flash. Although all these alternatives are still in use, none of them has become the single, dominant platform for rich web development. Many of them suffer from a number of problems, including installation headaches, poor development tools, and insufficient compatibility with the full range of browsers and operating systems. The only technology that’s been able to avoid these pitfalls is Flash, which boasts excellent cross-platform support and widespread adoption. However, Flash has only recently evolved from a spunky multimedia player into a set of dynamic programming tools. It still offers far less than a modern programming environment like .NET. That’s where Silverlight fits into the picture. Silverlight aims to combine the raw power and cross-platform support of Flash with a first-class programming platform that incorporates the fundamental concepts of .NET. At the moment, Flash has the edge over Silverlight because of its widespread adoption and its maturity. However, Silverlight boasts a few architectural features that Flash can’t match—most importantly, the fact that it’s based on a scaled-down version of .NET’s common language runtime (CLR) and allows developers to write client-side code using pure C#. Understanding Silverlight Silverlight uses a familiar technique to go beyond the capabilities of standard web pages: a lightweight browser plug-in. The advantage of the plug-in model is that the user needs to install just a single component to see content created by a range of different people and companies. Installing the plug-in requires a small download and forces the user to confirm the operation in at least one security dialog box. It takes a short but definite amount of time, and it’s an obvious inconvenience. However, once the plug-in is installed, the browser can process any content that uses the plug C#. ...展开收缩
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