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ASP.NET PDF Viewer using C#, VB/NETIn the first example, shown in Listing 10-8, you ll build a simple WCF service that is hosted on a web server and looks rather like a simple web service. You ll refine this service to show off some of the interesting features of WCF. To create a WCF service hosted in a web server, you follow the same steps discussed in the Creating Web Services section, except that hosting in Apache on Linux is not possible because WCF relies on some features that are specific to Windows. Listing 10-8. Creating a Simple WCF Service #light namespace Strangelights.Services open System.ServiceModel [<ServiceContract (Namespace = "http://strangelights.com/FSharp/Foundations/WCFServices")>] type IGreetingService = interface [<OperationContract>] abstract Greet : name:string -> string end excel barcode generator free, free barcode addin for excel 2013, barcode font in excel 2003, how to put barcode in excel 2007, free barcode for excel 2007, free barcode inventory software for excel, how to create barcode in microsoft excel 2003, how to create barcode in excel mac, how to create barcode in excel using barcode font, excel barcode add-in free,You can achieve the maximizing and minimizing effects by using a div element and the display property of its style attribute. You ll take a closer look at this in the next section. type GreetingService() = class interface IGreetingService with member xGreet(name) = "Hello: " + name end end This service is defined in two parts, an interface that describes the service contract and an implementation of that contract All WCF services are defined this way This interface is named IGreetingService and exposes one function, named Greet To make it a valid WCF contract, mark the interface with SystemServiceModelServiceContractAttribute, which should contain a namespace for the service Use OperationContractAttribute to mark each function within the interface that the service will expose It is important that each parameter has a name It s possible to create interfaces in F# where the parameters don t have names but are simply defined by their types. The Global Specialties Experimenter PCB or the Radio Shack 276-170 (see Figure A-6) match the layout of the electronic breadboard exactly, as can be seen in the bottom view in Figure A-7. It has the same row and column markings as the breadboard, so it should be easy to transfer the parts from the breadboard to the PCB. The only problem with the PCB is that it s way too long. That means that one Experimenter PCB could be the source for several sensors. An interface acting as a WCF contract whose functions do not have parameters will compile, but you ll receive an error when you invoke the service since the parameter names are used (via reflection) in the WCF framework to create the data that is sent across the wire The class GreetingService provides the implementation of the contract You simply offer a greeting by appending "hello: " to whatever name is passed To integrate the service with the web server, you need to create a svc file, which plays a similar role to the web service s asmx file, telling the web server what type should be used to handle the service request An example of an svc that goes with the service is as follows; the complete file is shown they are typically only one line long The most important attribute in the . Let s begin analyzing the code that makes up the Ajax Dashboard by looking at how all the components come together on a single Web page. Listing 8-2 shows the JSP that renders the main Ajax Dashboard page. Listing 8-2. ajaxDashboard.jsp <%@page contentType="text/html"%> <%@page pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> Figure A-7. Bottom view of the PCB Cutting the PCB is a lot easier than you might think: you need only a straight-edge ruler and a sharp knife, as shown in Figure A-8. You score the board by creating a shallow groove in the top and bottom of the board along a column of holes where you want to cut the board. Once the board has been scored, it will snap by bending it at the groove.
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