Johan Silfversparre, Author at blog.

Windows Phone 8.1 for developers – Using the Credential Locker

This blog post is part of a series about how Windows Phone 8.1 affects developers. The series is written in collaboration with Microsoft evangelist Peter Bryntesson, check out his blog here.

Intro

With the release of Windows Phone 8.1, the Credential Locker service is now available for Windows Phone app developers. This is great news for both first time users and those of us already using the service in our Windows 8.1 Store apps.
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Choose your Windows Phone XAML app model

This blog post is part of a series about how Windows Phone 8.1 affects developers. The series is written in collaboration with Microsoft evangelist Peter Bryntesson, check out his blog here.

Intro

The release of Windows Phone 8.1 SDK gives us, as developers, three different XAML app models to choose from for our future app development. This post will describe the difference between them and how to choose the right app model.
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Windows Phone 8.1 for Developers

We will during the next few weeks together with Microsoft evangelist Peter Bryntesson post a series of blog post regarding the new windows phone 8.1 platform. We will publish our…

A MVVM Visual State solution for your Windows Phone app

January 21, 2014
Johan Silfversparre
.Net
1 Comment

Do you need to control the visual state of your view from its view model? This blog post will present a simple but useful solution.
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Visual Studio 2013 and Blend design-time exception debugging

December 25, 2013
Johan Silfversparre
.Net
0 Comments

This blog post describes how to debug a design-time exception by attaching a second Visual Studio instance to the XAML designer worker process. A demo solution is included to let you practice the debugging scenario. I will also point out a problem with using ‘Application.Current’ in design-time.
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How to build a simple Win 8 Store App and also implement the Search Contract without using VS built-in Search Contract Template

I have looked into some videos and MSDN articles about the Search Contract and created a cleaner MVVM example without using the Visual Studio template for Search Contracts. The result is a fully working app also showing concepts like Search suggestions, Converters, Horizontal Listbox, XAML Resources, Blendability and INotifyPropertyChanged injection without becoming complex. Source code is included.

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How to shorten a link with Bitly and share it in a Windows Store app

July 7, 2013
Johan Silfversparre
.Net

I am working on a Windows Store app where one of the features is to share shortened links. This is a brief description on how I solved it.

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Label printing in your .NET application with a DYMO LabelWriter 450

I am involved in a side project to create a minor visitor management application. One feature is to print name badges. This post is about my first experience to use DYMO:s LabelWriter 450 and their .NET SDK to communicate with it.

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Hey! Why do your Windows Phone app need all that access!?

February 24, 2013
Johan Silfversparre
.Net
2 Comments

I recently received a comment from a Windows Phone owner questioning if one of my apps were spyware because of all the capabilities it required. The reason might be obvious for us developers but we can lose users if we don’t explain it better for them.

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Google Analytics for your WinRT app

November 26, 2012
Johan Silfversparre
.Net
0 Comments

I have looked into how to use Google Analytics in a WinRT app and would like to share my findings.

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Design resources for Windows Phone and Windows 8 programmers

November 21, 2012
Johan Silfversparre
.Net
0 Comments

I enjoy working with WP- and Win8 projects. New cool hardware, new application architectures, new tools and no more battleship-grey experiences! The developer scene has changed, especially at the frontend. I have collected some useful design resources for developers in this post.

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Visual Studio designer not working (NullReferenceException) in Windows Phone solution after WP8 SDK installation.

November 8, 2012
Johan Silfversparre
.Net
2 Comments

I watched the Build keynote last week on a big screen together with colleagues at Jayways Copenhagen office. One of the highlights was the WP8 SDK release. You can read a great…

Unboxing Dropbox and SharpBox

How to programmatically upload a file to your Dropbox account. On a train trip during the New Year’s weekend, I spent time testing and collecting notes about how to interact…

Your very first steps towards becoming a DI IoC Ninja

This blog posts header can in the noble spirit of recycling be reused the day an epic dirk will be available to steal on the Isle of Conquest in WoW.…