Windows Store Developer Solutions

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  • Blog Post: Strategies for sharing code in XAML-based Universal apps

    Universal apps are a great way to share code between your Windows and Windows Phone versions of your app. Most devs have figured out how to share modules which are exactly the same, but sharing modules which are only almost the same is a bit less obvious. The Shared project isn’t a normal...
  • Blog Post: Programmatically create and configure a Client Certificate for use in your Windows Runtime based app

    Often there is a need in your Windows Store app (including Windows Phone 8.1) to access resources (such as a WebServer) which requires Client certificate authentication. You typically use the Windows.Web.Http.HttpClient class to send a HTTPs request to your WebServer and attach a Client Certificate...
  • Blog Post: Constraining manipulations

    Touch screens are cool. Being able to drag and manipulate pictures and objects on the screen is fun, and the Xaml manipulation system makes it easy to drag and zoom controls by touch. Touch down, zip your finger across the screen, and watch the control slide away. But what if we want to apply more...
  • Blog Post: Including Self-Signed Certificates with your Windows Runtime based Windows Phone 8.1 apps

    The concept of Universal apps lets you share common code targeting the Windows Runtime between a Windows Store app and a Windows Phone 8.1 app. However there are still some areas where there isn’t a 1:1 mapping. When using self-signed certificates with your Windows Runtime based Windows Phone 8...
  • Blog Post: Cheat-Sheet for using Brokered Windows Runtime Components for side-loaded Windows Store apps

    Starting with the Windows 8.1 Update that was announced at //Build 2014, the functionality of performing “Inter Process Communication” – which is commonly referenced to as “IPC” between a side-loaded Windows Store app and a Desktop process has been enabled to leverage existing...
  • Blog Post: 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...
  • Blog Post: DatagramSocket Multicast functionality on Windows 8.1 throws an error 0x80072AF9 (WSAHOST_NOT_FOUND)

    We have noticed multiple customer reports of using the Multicast functionality of the Windows.Networking.Sockets.DatagramSocket class on Windows 8.1. Most of the reported issues are with sending Multicast packets to the Multicast DNS address of 224.0.0.251 and port 5353, however the same could be...
  • Blog Post: Don’t trust your TCP/IP printer’s status

    I recently ran into an issue with a customer who was experiencing an unstable experience querying for the System.Devices.Connected property of a printer from a Windows Store app. The printer was configured using a Standard TCP/IP port (For information on how to configure a printer via a Standard TCP...
  • Blog Post: Direct2D Windows Store app has distorted rendering (Windows 8.0)

    There is a situation where your Direct2D rendering can be distorted. This has been fixed in Windows 8.1 if you retarget your app for Windows 8.1 and rebuild it. This problem occurs when you create your DirectX surfaces in one orientation of the device and before you attach the context to the Page, you...
  • Blog Post: How to store JSON data in Windows Phone 8

    There have been a couple of forum questions on how to store JSON data and retrieve it in Windows Phone 8.  This post will explain how to do this with a simple example.  As a bonus I will show the code you can use to store a List of objects! JSON serialization is a great way to store objects...
  • Blog Post: 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...
  • Blog Post: Incremental Loading of Data using Windows Azure Mobile Services

    When your data is in the cloud you should only download information that a user is actually looking at. In the case where you have thousands of items and you want to give the ability to scroll through them you should only fetch the data that the user will be viewing (yes, I know that is a horrible UI...
  • Blog Post: Using WCF classes to consume a WebService using Plain Old XML (POX) in a Windows Store app

    You can leverage WCF functionality from a Windows Store app to call a WebService using Plain Old XML (POX) style of messaging. This blog and the sample included below documents the steps a Windows Store app should perform to consume such a service. The sample is based off the topic of Interoperability...
  • Blog Post: 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...
  • Blog Post: Ten Things You Need to Know About WebView

    Hi - I am Matt Small, a Sr. Escalation Engineer on the Microsoft Windows Store Developer Solutions team. I have been working on Windows 8 since before the Release Preview, and I have spent many hours working in the Store forums, primarily in the C# forum. I’ve seen a *lot* of posts on the C# forum...
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