Do I need to dispose a web service reference in ASP.NET? Can I use a singleton?

Do I really need to dispose a SoapHttpClientProtocol object?

Is it better practice to use the instance as a Singleton in ASP.Net?

This says that SoapHttpClientProtocol is Thread Safe:

http://msdn.microsoft.com/en-us/library/sy开发者_C百科stem.web.services.protocols.soaphttpclientprotocol.aspx.

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The fact that it is thread-safe means that using it as singleton will reduce your site almost to a single-threaded application.

Proxies - especially for a web application - should always be created as temporary object inside a using block (although in WCF it needs to be a different approach). This approach will have its overhead of creating a proxy every time but is the safest approach. This will prevent different clients of the ASP.NET application clashing with each other or using a closed or faulted proxy.