Simple .NET/ASP.NET PDF document editor web control SDK

Its full range of modules, including user permissions, security mechanisms, JavaScript menus, WYSIWYG editors, language translations, and more, helps create the foundation for a powerful web site. Combined with its templating system (and a few tips and tricks), any graphic design file can be used to easily create a Drupal web site. The drawback is the learning curve; I definitely don t recommend using Drupal for the first time when you need a site online within 24 hours. Drupal provides you with a number of modules to speed development so you can become more efficient and productive. Once you learn Drupal, you should be able to configure and theme a simple online brochure in less than a day. There are a number of tools for every step of the process, including testing, theming, module writing, importing content, error reporting, and more. You can even write custom installation profiles that automatically configure a site exactly how you specify. Finally, the Drupal system with its thousands of contributed modules is entirely open source, which means you don t need to pay to get full functionality. Many open source CMSs use a commercial open source business model through which the base system is free but you must pay for advanced functionality. All modules published through the Drupal web site are automatically released under the GNU General Public License (GPL) version 2, which means anyone can update the code and share it freely* with others. * Free as in speech, not as in free beer. See www.gnu.org/philosophy/free-sw.html. Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009 Free Software Foundation, Inc. Please share your code.

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If a developer writes code behind that relies on certain elements with particular x:Name attributes being present in the Xaml, but the designer decides to delete those elements because they re ugly and then creates new replacements but forgets to give them the same names, we re obviously going to see problems In practice, a smooth developer/designer workflow goes a bit deeper than this, and relies on other WPF and Silverlight features, most notably templates, which we ll be getting to later But Xaml is an important part of the solution..

Mapping the path part of a URL directly to a disk folder is at the root of the problems that web developers face today. As dynamic web technologies have developed, .html files containing information have changed to .aspx files containing source code. Suddenly the URL isn t pointing to a document but to source code that fetches information from a database, and the filename must be generic because one source file can fetch any information it wants. What a mess! Consider the following URL:

The x:Name attribute is optional. In fact, most Xaml elements tend not to be named you only name the elements that you need to be able to access from the code behind. This makes the Xaml less cluttered, and if you are working with designers, it makes it easier for them to know which elements are structurally important, and which ones they can rework for design purposes.

The equivalence between elements and objects suggests that Xaml doesn t necessarily have to be used just for the user interface. The Xaml syntax can be used to create .NET objects of almost any kind. As long as a type has a default constructor and can be configured through its properties with suitable type converters, it s possible to use it from Xaml it s technically possible to create a Windows Forms UI in Xaml, for example. However, Xaml tends to be cumbersome if you use it for types that weren t designed with Xaml in mind, so in practice, it s a much better fit for WPF, Silverlight, and also the Workflow Foundation, all of which are meant to be used from Xaml, than it is for other parts of the .NET Framework.

Version 1.0 of Silverlight didn t support .NET at all. It offered Xaml support, but if you wanted anything other than static, noninteractive content, you needed to define the behavior using browser-hosted script. In this situation, Xaml elements clearly don t correspond to .NET objects. However, they still correspond to objects the JavaScript code can get hold of an object representing any element in the Xaml. This is still supported in current versions of Silverlight you can use objects created in Xaml from C#, JavaScript, or both. (JavaScript support can be useful for making interactive splash screens that display while waiting for your main C#-based UI to download.) But JavaScript objects are not the same thing as .NET objects. This raises a question: what sort of objects does Xaml really create Are they .NET objects with JavaScript wrappers Or are they JavaScript objects with .NET wrappers The answer is: it depends. They re not ordinary native JavaScript objects, but they re not always .NET objects either. For primitive elements with no interactive behavior, such as graphical shapes or text blocks, both the .NET and the JavaScript objects appear to be wrappers around some internal object that lives inside the plug-in. For more complex objects such as buttons or listboxes, the .NET objects seem to be the real thing, because their behavior is implemented as .NET code.

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Given that you have a choice between Xaml and C#, which should you use Xaml is often easier because you can use tools such as Visual Studio s Xaml designer (or even Expression Blend) to edit the appearance and layout this can take much less effort than tweaking code repeatedly until the outcome looks the way you want. Obviously, if developers and designers are involved, Xaml is preferable by far, because it enables designers to tweak and refine the appearance without needing to involve developers for every change. But even for a UI being created entirely by developers, an interactive design surface is a much more efficient way to create a layout than code. This doesn t mean you should go out of your way to avoid creating elements in code, however, particularly if code looks like the most straightforward solution to a problem. Use whichever approach is more convenient for the task at hand. Now that we ve seen that Xaml is really just a way of creating objects, what types of objects do Silverlight and WPF offer