Windows Store app projects stopped generating the .appxupload file after installing VS 2015 Update 1

Problem A few people have noticed that their Windows Store app projects stopped generating the .appxupload file after upgrading to VisualStudio 2015 Update 1.   CauseThe project is not associated with the Store app.The StoreAssociation file path is missing from the respective project .csproj file. Either one of these causes listed above can stop the…


How to apply an “Opacity Mask” to an image by mixing XAML and Direct2D

If you are a XAML graphics dev you may be lamenting the fact that in Windows Store 8.x apps the “opacity mask” property is conspicuously missing from the XAML image based controls. This is an unfortunate omission because there really isn’t an easy way to facilitate the opacity mask functionality using XAML alone. Let’s take…


Developing an app for both Windows Store and Windows Phone 8 platforms

This article surveys various approaches in porting an application for use in the Windows Store and Windows Phone platforms. The Windows Phone 8 and Windows 8 – building together article identifies some benefits of this approach. You can plan in advance to ensure that the programming technologies that you use are compatible in the desired…


Datagram Socket Communication in Windows Phone 8

New to Windows Phone 8 is the Windows.Networking.Sockets namespace. This namespace is also used in the Windows Store app development environment, which makes it convenient for developers who wish to port networking applications to both targets.  Windows.Networking.Sockets is the replacement for the older System.Net.Sockets namespace used in the Windows Phone 7 network model.  System.Net.Sockets is provided for…


Where did all my gestures go?

A common problem we’ve seen from customers is how to handle pointer input and manipulations on elements inside of collection controls such as ListViews, GridViews, and FlipViews. The app can get the PointerPressed event on items inside the View, but after that the pointer events disappear and the app cannot convert them into gestures or…


Skip the path: stick to the StorageFile

To build user confidence, a user’s files are protected from arbitrary access by Windows Store apps. This has produced a large number of threads in the Windows Store apps Forums from developers who are used to having full access to the file system and who don’t expect to need the user’s permission to view or…


Looking back to understand the future: OpenFileDialog vs. FileOpenPicker

Most of us are familiar with the standard .NET OpenFileDialog object. With the introduction of Windows 8 Store apps the OpenFileDialog has gotten a facelift, a simplified API and yet somehow it’s still not quite the same. The new FileOpenPicker (or Picker) has been the subject of much mystery and confusion on the MSDN forums….


Why does the XAML designer report that my custom elements have not been built?

Consider a scenario where you’ve been working on developing business logic for your Windows Store app and you switch to the Visual Studio designer to check a UI element. You may notice the below message in the designer view of some XAML pages: The Design view cannot display correctly because some custom elements have not yet been built….

2

About WebView and Fonts…

In my previous blog post, I posted some information about using a font which is included as part of the appx package (point #9) which turned out to be not correct.  I took that information from this post on the Windows Store C# forum. Since then, I’ve received requests to more fully explain how to achieve this…

5