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

The headline news component is the simplest component of the Ajax Dashboard The component polls the server at set intervals and updates its contents with the current headline news stories Unlike the other three components, the news component never sends any data to the server Instead, it simply asks for the most current news items and displays them Since no data is being sent to the server, the amount of code needed to actually send the request is ridiculously small, as shown here: function updateNewsItems() { var ajaxRequest = new AjaxRequest("UpdateNewsItems"); ajaxRequestsendRequest(); } This component is implemented slightly differently than the weather forecast component Both rely on the Taconite framework to dynamically create content that is specified within the body of a JSP The weather forecast component uses Taconite s JSP tags to build the response that is returned to the server.

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Digi-Key: http://www.digikey.com/ LEGO Education: http://www.legoeducation.com/store/ LEGO MINDSTORMS: http://mindstorms.lego.com/ LEGO page with NXT Developer Kits: http://mindstorms.lego.com/Overview/NXTreme.aspx LEGO Store: http://shop.lego.com/ Michael Gasperi s LEGO page: http://www.extremenxt.com/lego.htm Mindsensors: http://www.mindsensors.com/ MINDSTORMS-related newsgroup: http://news.lugnet.com/robotics/ Nxtbot.com blog: http://www.NXTBot.com The NXT STEP blog: http://www.thenxtstep.blogspot.com Nxtasy.org NXT news: http://www.nxtasy.org/ Philippe (Philo s) LEGO page: http://www.philohome.com/ Radio Shack: http://www.radioshack.com/ Robot construction plans: http://engk12.ece.missouri.edu/program.htm SensorWiki.org: http://sensorwiki.org/

F# code is organized into modules, which are basically a way of grouping values and types under a common name. This organization has an effect on the scope of identifiers. Inside a module, identifiers can reference each other freely. To reference identifiers outside a module, the identifier must be qualified with the module name, unless the module is explicitly opened with the open directive (see Opening Namespaces and Modules later in this chapter). By default, each module is contained in a single source file. The entire contents of the source file make up the module, and if the module isn t explicitly named, it gets the name of its source file, with the first letter capitalized. (F# is case sensitive, so it s important to remember this.) It s recommended that such anonymous modules be used only for very simple programs. To explicitly name a module, use the keyword module. The keyword has two modes of operation. One gives the same name to the whole of the source file. The other mode gives a name to a section of a source file; this way several modules can appear in a source file. To include the entire contents of a source file in the same explicitly named module, you must place the module keyword at the top of the source file. A module name can contain dots, and these separate the name into parts. For example: module Strangelights.Foundations.ModuleDemo You can define nested modules within the same source file. Nested module names cannot contain dots. After the nested module s name comes an equals sign followed by the indented module definition. You can also use the keywords begin and end. To wrap the

The news component, in contrast, eschews the use of Taconite s JSP tags and instead relies on the developer to build the XML response that is returned to the client In this scenario, the parsing of the HTML to JavaScript will occur within the browser rather than on the server What are the benefits of avoiding the use of Taconite s JSP tags The main benefit is that this approach demonstrates how the Taconite framework can be server-side technology agnostic As long as the tools used on the server can generate an XML document, you can use this approach along with the Taconite framework A side benefit of using the browser-side parser instead of the server-side parser is lower bandwidth usage When using the JavaScript parser, the desired HTML content is returned to the browser as just that HTML.

The code in this book will focus on using fscexe, rather than fsiexe This is because although fsiexe is great for testing code, running simple scripts, and running experiments, I believe fscexe is more useful for producing finished software Since there s little difference between the syntax and the commands, most examples will work with little or no adaptation in fsiexe, and I ll warn you when any changes are necessary All the samples in this book were created using NET 20 running on Windows XP Professional If you re using NET 10 or 11, you ll experience problems with many of the samples because quite a few of them use classes and methods from the NET 20 base class library (BCL) that aren t available in version 10 or 11.

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