WP7: Know your data

If you've been developing Windows Phone 7 apps you'll be aware of the '90 MB' memory limit guideline detailed in the application certification requirements, if not it says:5.2.5 Memory Consumption An application must not exceed 90 MB of RAM usage, except on devices that have more than 256 MB of memory. You can use the DeviceExtendedProperties class to query the amount of memory that is available on the device and modify the application behavior at...

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WP7Contrib: Thread safe ObservableCollection<T>

Continuing with the introduction of WP7Contrib concepts, patterns & services from my previous post I thought I would explain why we have chosen to implement our own ObservableCollection.As with the desktop version of Silverlight the idea of a 'blocking call' on the UI thread is discouraged, to point where if you do block the UI thread on a WP7 device your application could be automatically torn down - bad user experience. So to get round the issue the Silverlight framework makes use of the standard .Net 'async pattern' - IAsyncResult interface....

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WP7Contrib: Network Connectivity Push Model

To start my WP7Contrib blogging contribution I thought I started with something small, easy and relatively quick to explain. If you're familiar with the platform you can get the current network type using the API - NetworkInterface.NetworkInterfaceType. This is a simple synchronous call which returns what MSDN describes as 'the type of the network servicing Internet requests. This is a prime example of a 'pull model' to obtain data. We've turned...

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WP7Contrib...

Just wanted to announce the go live of WP7Contrib - a community effort based around the MS Window Phone 7 Platform.Rich Griffin and I have spent the last couple of months bring together code snippets and patterns into a cohensive contribution library, we're currently developing an app using the framework and will be giving more details and examples over the next couple of wee...

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