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

Like the service configuration we examined earlier, this also has an <endpoint> element with an address, binding, and contract, although being on the client side, this <endpoint> appears inside a <client> element instead of a <service> element. The proxy gets the address from this endpoint definition.

You can provide the proxy with an address from code if you want to. It offers various constructor overloads, some of which accept a URL. But if you don t provide one, it will look in the configuration file.

barcode font excel 2016, excel 2007 barcode generator free, free barcode generator microsoft excel, excel barcode generator add in free, how to create barcodes in excel 2007 free, how to add barcode font in excel 2010, excel barcode erstellen freeware, barcode font excel 2010 free, create barcodes in excel 2010, how to make barcodes in excel 2011,

Before you start dealing with all the details that have to be managed for a successful adaptation to different languages and cultures of your application, have a look at the tools Qt provides for managing this.

Notice that the endpoint also has a bindingConfiguration attribute this refers to a <binding> element earlier in the file that contains information on exactly how the wsHttpBinding should be configured. There was nothing like this in the service, because we were just using the defaults. But the Add Service Reference dialog always generates a binding configuration entry, even if you happen to be using the defaults. Our chat application is demonstrating the ability for the client to send a note to the server, but it s not complete yet. The client needs a couple of extra features. To make our conversation a bit less one-sided, we should be able to see notes written by other people. And unless our conversations are all going to be exceptionally brief, we need to be able to type in more than just one note. We ll fix that second problem by modifying the code in Example 13-5. We ll put the call to the proxy inside a loop, and we ll also ask for the user s name, so we can support notes from people who may not be called Ian (see Example 13-7).

static void Main(string[] args) { ChatServiceClient chatProxy = new ChatServiceClient(); Console.WriteLine("Please enter your name:"); string name = Console.ReadLine(); while (true) { Console.WriteLine("Type a note (or hit enter to quit):"); string note = Console.ReadLine(); if (string.IsNullOrEmpty(note)) { break; } chatProxy.PostNote(name, note); }

}

We ll also modify the server so that it prints out the note, rather than sending it to the debug output that ll make it a bit easier to see when notes are coming in. So change PostNote in ChatService to this:

Did you know that internationalization is often written as i18n, where 18 is the number of characters Tip

The date for the closing price should go onto the X axis This uses the XDate class (also part of the ZedGraph library), which is the data type used by ZedGraph to store dates in a chart and automatically generate axes from them When using a PointPairList, you encode the XDate into a Double You can see this being encoded in the variable nx Finally, you add the values for nx and ny to the PointPairList (called pt) To finalize drawing the chart, you load the PointPairList, set the visual configuration of the chart, and trigger the AxisChange method, which refreshes it First set the XAxis to be date encoded so that it recognizes the Doubles as dates: paneXAxisType = AxisTypeDate; Then load the PointPairList onto the chart You do this using the AddCurve method of the pane This method takes four parameters.

public void PostNote(string from, string note) { Console.WriteLine("{0}: {1}", from, note); }

If you run both programs again by pressing F5, the client program will ask you to type in your name, and will then let you type in as many notes as you like. Each new note will be sent to the server, and you should see the notes appear in the server console window. This is an improvement, but there s still no way for the client to find out when other users have typed notes. For this, we ll need to add bidirectional communication.

The contract for our chat service is a one-sided affair it s all about the notes the client sends to the server. But WCF supports duplex contracts, which provide a means for the server to call the client back. (Note that there are some issues with HTTP that can make duplex communication tricky see the sidebar on the next page.) A duplex contract involves two interfaces as well as an interface that the server implements, we also define an interface that the client must implement if it wants to use the service. In our example, the service wants to notify clients whenever any user posts a note. So the client-side interface, shown in Example 13-8, looks pretty similar to our current server interface.

removed Localization can often be seen as l10n (shortened in the same way).

public interface IChatClient { [OperationContract] void NotePosted(string from, string note); }