Windows Phone 7 web service - windows-phone-7

I'm new in Silverlight and Windows Phone 7 app development. I need to create a web service to connect my phone with db in another place. How can I make it can you advice me with example and can I you digital certificate in Silverlight?

Andy Pennell wrote a walkthough on how to use WCF with Windows Phone.

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Cloud service for windows phone 7 apps

In feb 2013 the windows azure toolkit for windows phone 7 apps has been suspended as per the link
Are there any cloud services that i can use instead of this azure on windows phone 7 apps ?
It was not suspended, but superseded. What this means is that now you can use Windows Azure Mobile Services since it is specifically designed to work with application for Windows Phone 8 and Windows Store.
As you would with the "big house" Azure, you can use AMS through a SDK:
Windows Phone 8/Windows Store
Windows Phone 7.5
(pre-release)
Or you could access it through the standard REST layer.

Windows Phone 7 Azure Mobile services

I wanted to use the new Mobile service available on Azure for my Windows Phone 7 project. But cannot figure out what to include in the project in order to make this work. The "new Windows Phone 8 app" option works fine, however I would like to get this service into a Windows Phone 7 app.
Although the Mobile Services team has not released an official WP7 SDK, you can find an unofficial one here: https://github.com/zaxy78/azure-mobile-wp7-sdk.
You can also access the REST API directly, reference is here http://msdn.microsoft.com/en-us/library/windowsazure/jj710108.aspx
Hope that helps.
"Azure Mobile Services" is just a set of Azure services packaged for mobile platforms. Right now Windows Phone 7 is not supported, considering it is a deprecated platform (for Windows Phone 8 and not backwards compatible) I would not expect it to be supported.
However, since "Azure Mobile Services" is just a "packaged set of services" you can absolutely use Azure services in a Windows Phone 7 app it is just not "packaged in one spot" for you.
You could use the Windows Phone Toolkit (open source) for Windows Phone 7 phones...
http://channel9.msdn.com/posts/Windows-Phone-Push-Notifications-and-Windows-Azure
However, most things in Azure expose RESTful APIs..so you could call the REST APIs for the specific Azure service. For example:
http://blogs.msdn.com/b/prathul/archive/2012/08/10/windows-phone-amp-azure-service-bus-rest-authentication-and-messaging.aspx
The latest pre-release version of the Windows Azure Mobile Services client (0.3.3-rc) on NuGet now supports both Windows Phone 8 and Windows Phone 7.1 apps, along with Windows Store apps.

How to implement Live Streaming on Windows Phone

I want to implement Audio Live Streaming on Windows Phone. most of them told Windows Phone 7 sdk does not support Streaming. so I upgrade and install Windows Phone 7.1.
Which class i want to use to implement Live Streaming?????
Please give some guidelines and materials to do this task.
Thanks in advance.
You may want to consider using IIS 7.X for the streaming portion. The following link shows how you can build the client app for Windows Phone 7:
http://www.iis.net/community/default.aspx?tabid=34&g=6&i=2020
The sample requires the IIS Smooth Streaming Client (1.1), Silverlight 4, and the Visual Studio Windows Phone 7 Developer Tools.

Can I use Windows Live Id in my Windows Phone applications?

Is there guidance out there? Samples? Is this possible?
Everything I am finding is 2010 before WP7 was even released! (including this question: Windows Live Id Authentication for Windows Phone 7 and Windows Live ID Single-Sign-On on Windows Phone 7 and Getting the currently logged-in Windows Live Id (Windows Phone 7) and Messenger connect desktop API for Windows Phone 7)
Anything new?
yes you can, by using the windows azure access control service:
http://msdn.microsoft.com/en-us/gg192968

installing app in development on retail phone

Can I use a retail phone to test apps I'm developing for wp7?
Yes, you can use a retail phone to test Windows Phone 7 apps but you'll need to register as a developer on the Windows Phone Marketplace ($99 USD/year) to be able to register your phone as a developer device.
Once your phone is registered as a developer device, follow the instructions here.
I think Microsoft is missing the point, considering that the Windows Phone Market place is being charged and unavailable for developers living in different parts of the world. How do they expect their phones to to pick in such places, if local apps cannot be programmed into it?

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