ASP WCF Service updating Webpage

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Hello,

i am trying to write a simple ASP.NET Webpage, that get its data (list of objects)
from a local running C# WPF program. Therefore i created a WCF Service in my ASP.NET
project. The call of my service methods from my local program works fine. My question now is, how can i update the webpage when calling the service methods, how can i access my webpage from the webservice? Is this possible at all?

Kind Regards
Manu

Posted 17-Jul-12 10:04am

m.bleimuth

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ZurdoDev 17-Jul-12 16:09pm

An easy way to do it is to use jQuery. See http://api.jquery.com/jQuery.ajax/. You call a webservice and can get back your objects as json data.

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db7uk · Answer 1 · 2012-07-17T11:25:00

Solution 1

Your best bet is to lookup COMET / Reverse AJAX, SignalR and Jquery / Javascript ajax callbacks.

http://en.wikipedia.org/wiki/Comet_(programming)[^]
http://www.hanselman.com/blog/AsynchronousScalableWebApplicationsWithRealtimePersistentLongrunningConnectionsWithSignalR.aspx[^]
ASP.NET MVC, SignalR and Knockout based Real time UI syncing - For Co Working UIs and Continuous Clients[^]

Posted 17-Jul-12 11:25am

db7uk

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m.bleimuth 18-Jul-12 6:04am

i think thats the wrong direction, what i want is, call a webservice method, for example SetWebData(object data), after calling that method the webclients should update their content with the data object. I do not want to store the data in any kind of database or something like this. After reading your links and do a lot of googeling i think that its not possible the way i want to do it?

db7uk 18-Jul-12 7:49am

So you want a service that performs something like an event aggregator or mediator?

m.bleimuth 18-Jul-12 8:02am

Exactly, the Service should only push the data to the web page to Display it there.

db7uk 19-Jul-12 4:14am

Well with signalR and jQuery you can do that. You may also want to look at a duplex service that users subscribe to and then get notified when something happens. You can do this with JQuery but if it were Silverlight you would have a better time with it.

db7uk 19-Jul-12 4:15am

http://social.msdn.microsoft.com/Forums/en-US/netfx64bit/thread/9a9a7d1d-d818-4b53-9e6b-6527051359a6/

http://www.codeproject.com/Articles/27107/Scalable-COMET-Combined-with-ASP-NET