It has been a bit quiet on my blog the last couple of weeks. Sorry about that. I have been very busy the last couple of weeks. Unfortunately, I have decided to quit my (awesome) job at Microsoft and move back to The Netherlands to be close again with...

One of the things I found a bit more challenging than it should have been is working with animations in Silverlight. Often people will resort to code behind and triggering animations from code. However, I don’t really like that approach, because animations...

Today, we’ve put the first beta drop of the book ‘Guide for Claims based identity and access control’ online. You can find the beta of the guide at Codeplex . Over the next couple of weeks, we’ll keep placing new releases online, so keep looking. So what...

[Update] This is part 1 of this post. Read the second post here. At the end of building prism V2, we have played around with different application styles to see how easy it is to consume our own libraries. In this blog post, I’m going to describe my attempt...

A colleague asked me a question today. How do you apply the Model View ViewModel pattern to new Windows and Popups. To illustrate that, i wrote a small sample app, which I wanted to share with you. This post is part of a series: <Back to intro>...

A while back, I wrote an MSDN article on writing multi-targeted programs with Prism. http://msdn.microsoft.com/en-us/magazine/ee321573.aspx   Hope you like it!

When I started with separated presentation patterns, I always thought that to create a single screen, I ALWAYS had to create a view to display the data, a presenter/controller/viewmodel class to hold the logic and a model class to hold the data. Later...

In this third part of my series of blog posts on the ViewModel pattern, I’m going to demonstrate how to implement a simple example of the ViewModel pattern. Not to worry, we’ll dive into more exiting examples later. <Back to intro> <Back to:...

This is the second blog post in a series on the Model View ViewModel pattern. Before I’m going to dive into the details of the Model View ViewModel pattern, I thought it is handy to describe the differences and similarities between this pattern and other...

While building the Composite Application Guidance for WPF and Silverlight (AKA Prism V2), we relied heavily on the Model View ViewModel pattern. But while this pattern is definitely the best thing ever, it took me a while to come to grips with it: First...

Hi guys, Sorry, it has been a bit silent on my blog. But for a good reason. For the last couple of months, I’ve been secretly working on a new project. And this thing is going to be HUGE! Bigger than windows! Prettier than the IPhone and far more influential...

In a previous post , I mentioned that there are difficulties with using the Visual Studio extensions for Windows SharePoint Services (VSeWSS) in combination with interfaces. It turns out that this problem is not just limited to using base classes, but...

This week, we published the results of interation 9 to our codeplex site. You can get it here: http://spg.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=27299 In this drop, we have addressed a number of tasks: Implemented trusted facade pattern and...

Hi guys, Our drop 8 video is online on Channel 9. Check it out: Happy watching and keep practicing! _Erwin

A while ago, I put an example application on my blog on how to build an outlook style application . The last couple of weeks, I’ve been working on a new version of this app. I’ve done some bugfixes, but also included support for opening use cases in...

Last Friday, we’ve released drop 8 of our Guidance.   What did we tackle in iteration 8 The main theme in drop 8 was exception handling in SharePoint. But we also did a bunch of refactoring in the application: Service locator We want to create a...

Hi guys, Last monday, we have released drop 7 of the SharePoint Guidance V2. You can get it here: http://spg.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=26085 In this drop, we have tackled a couple of things: A couple of bugfixes and installation...

[Update] I’ve posted a workaround to this issue here: http://blogs.msdn.com/erwinvandervalk/archive/2009/06/08/using-interfaces-and-base-classes-in-different-assembly-using-vsewss-1-3.aspx . [Original post] One of the common practices I try to...

Hi Guys, Last week, we have released drop 6 of the Sharepoint guidance V2 . In this drop, we have tackled the following subjects: Several ways of doing list access Caching BDC data and published pages Using powershell to query sharepoint workflow associations...

Prism has been out for quite a while now. I hope you had some time to play with it, read the docs, look at the code and build apps with it. So, what do YOU think of prism? Did you like it? Did it help solve your composite application problems? Was it...

Since the Prism project is done, I’ll be working on a different project for the next couple of months. Sharepoint guidance on Codeplex The goal of this project is to provide guidance on how to build Sharepoint applications in a professional way. Version...

I found myself today working on a LINQ query that, in my opinion violated the DRY principle.     Don't Repeat Yourself (DRY, also known as Single Point of Truth) is a process philosophy aimed at reducing duplication, particularly in computing...

Last week, Bob and I have recorded a couple of webcasts. In these webcasts, we are creating an modular application that aggregates search results from Digg and Twitter. Part 1: Modules and a shell In the first part, we are demonstrating how to create...

[Update] This is part 1 of this post. Read the second post here. At the end of building prism V2, we have played around with different application styles to see how easy it is to consume our own libraries. In this blog post, I’m going to describe my attempt...

I’m really happy and extremely proud to say that we have launched the Prism V2 (the Composite Application Guidance for WPF and Silverlight) What is prism V2? Prism is a set of guidance and reusable components that help you create composite applications...