CODEWITHSUNDEEP
wcfservicereal-time
joanna
joanna

Reputation: 773

WCF streaming service

I want to display some real-time data in a chart, in a WPF client. The data should come from a WCF service. Right now, it works with a basic WCF service (wsHttpBinding), but it doesn't fulfill my need of real-time plotting. I call the service asynchronously, then update my UI, but I need to eliminate the time of waiting for the service call to finish.

I want to be able to read a value from the service stream every 40 miliseconds, and update my chart. Which is the best way to do this using WCF?

Upvotes: 0

Views: 214

Answers (2)

blindmeis
blindmeis

Reputation: 22445

do you have some code what you have so far?

i would simply open a duplexclient proxy and listen to the wcf service callbacks. but to be honest, i dont know how fast it is.

Upvotes: 0

Shiraz Bhaiji
Shiraz Bhaiji

Reputation: 65461

If you have an absolute requirement of 40 millisecond old data then WCF may not be the correct choice. WCF protects you from the plumbing, but that comes at a cost. You can get better performance using sockets directly.

For an example of how to use streaming in WCF see: http://msdn.microsoft.com/en-us/library/ms789010.aspx

Also Infragistics have some WPF controls for showing realtime data. See: http://www.infragistics.com/dotnet/netadvantage/wpf/data-visualization.aspx#Overview

Upvotes: 1

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