Answer / Naveen Gautam

Yes, Windows Communication Foundation (WCF) is supported in Windows Phone. You can use WCF services to create a service-oriented architecture on the phone.

Can you please explain the best way to detect that I am in design-mode in expression blend or visual studio?

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Explain where is xmldocument class?

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Explain how to detect the resolution of my device?

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Explain how to access the liveid credentials a user has entered into the device?

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How do you know you have a virus on your phone?

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Suppose have a very simple application that uses the applicationbar. The app bar shows one menu item when in portrait. However as the second image shows theapp bar displays now items in landscape mode. Is that by design or a bug?

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Tell me can I write multi-player games using wi-fi or blue tooth in the device.?

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What content can I share/save?

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Explain how to manage my isolated storage quota?

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How to change language settings?

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Explain how the volume work between apps and hardware buttons on the device?

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In the emulator, networkinterface.getisnetworkavailable() always return false?

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