problem in multiple asynchronous calls on webservice method in wpf application

Posted by black sensei on Stack Overflow See other posts from Stack Overflow or by black sensei
Published on 2010-05-12T21:09:39Z Indexed on 2010/05/12 21:14 UTC
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wpf

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web-services

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c#

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wcf

Hello Experts!
i'm trying to create an application which connects to internet and consume web services for every of it's operation.As far as i'm concerned i'll like to useasync method which i'm using already to get a collection of Contacts.I've realized that when i'm doing the same for groups (meaning getting groups async) i'm having errors in the calls , but when using normal call there ins't.So i did some research online and find that a lot of people has the same problem.
Some of them are asked to use WCF (for which i don't know jack).I'll like to know if there is another way to overcome this. if not can somebody point me to reliable resource online and help me get through it? thanks for reading and helping

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