I haven’t been able to view one of my pages in the VS designer for several weeks. Just gave me a stacktrace. I tried to figure it out a couple times but could never find the source of the problem. VS just didn’t give me any help in narrowing down the cause. I opened up …
James Ashley posted a great tip on simplifying tombstoning by abstracting IsolatedStorageSettings.ApplicationSettings and PhoneApplicationService.Current.State to a common interface IDataStorage. This makes storing either temporary state data or more permanent settings data much easier with less code. This was a very good post but the duplication on the two IDataStorage implementations made me cringe a little. …
No new content in this post, but wanted to share my findings on charting with MVVM on the phone. I initially started with Visifire. They have some really nice charts and features out of the box but I kept hitting brick walls with databinding and MVVM. They do have some databinding but it isn’t enough, …
I recently had the need to change the state of a MediaElement to coincide with other page functionality. You can easily change the state of a MediaElement from the code-behind but you can’t unit test this. At first I thought, it would be easy to just bind the CurrentState property to a ViewModel property but …
Unit Testing the Setting of MediaElementState in Silverlight Read More »
I have been working on my second application for the last two weeks and wanted to share some code. As stated before, I’m really enjoying the MVVM pattern and how it makes code more testable. I wasn’t sure that I would be able to test touch interaction with the phone but was able to work …
I have been working on my WP7 app now for around 6 weeks. I’m not completely happy with it yet but I have good set of base functionality. For the first 4 weeks I couldn’t run my app in the emulator from the start screen or the app list. I had to start the app …
So my first Windows Phone 7 app is a GPS tracking app. My problem initially was the screen would lock after a few seconds of no touch activity and stop my app. A GPS tracking app isn’t very effective if you only get the first few points then shuts down. I assumed this couldn’t be …
Just finished a cool extension method (at least I think it is), that converts any interface implementation to another implementation. This can’t be done normally. Only properties are copied over but you could copy anything that can be accessed via reflection. I know someone somewhere has already done this but its so rewarding to have …
Cast between Different Interface Implementations Read More »
So I had blogged a couple weeks ago how I was getting non-descript IsolatedStorageExceptions. Not knowing the reason for the exception is super irritating. As you can see from the exception details there is no indication of the root cause, only that the “operation” is not permitted. I found you can use the immediate window …
Currently trying to fix a memory leak. Don’t have a lot of experience troubleshooting these so figured I would post about. The memory leak occurs when you replay a MediaElement in the MediaEnded event. I started with a new WP7 app added the following xaml to the page: <MediaElement AutoPlay=”True” Source=”MyShortMovie.wmv” MediaEnded=”MediaElement_MediaEnded”/> and the following …