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My two-part article on rebuilding an existing Silverlight application to use MEF (Managed Extensibility Framework) for “selective composition” is now live on SilverlightShow.net ( part 1 , part 2 ). I took my Halloween Gallery application and made it...
Following up on The ultimate hack for Silverlight in Blend post from Josh Smith, I tried to make Blend display pictures from the My Pictures folder right in my Silverlight application. Needless to say, it worked as advertised :) The ViewModel is set through...
A few of my Silverlight articles were published on the SilverlightShow site this past two months. The first one is an introduction to Silverlight/(WPF)/Blend behaviors, where I create a Silverlight Halloween Sound Player without writing a single line...
In my post -NTK09 conference blog post I mentioned one of my MVVM demos was about sharing a ViewModel between WPF , Silverlight and even Windows Forms application. I got a lot of requests for posting sample code online since then, which I intended to...
In my previous post , I wrote about “the first line of defense” against inputting invalid data in Silverlight applications (or any kind of application, for that matter) – preventing the user from entering invalid data through some an input form. Input...
When taking about data validation in applications, I usually describe the validation as the five-stage process or, put differently, five lines of defense against invalid data. In this post, I’ll write about the first line of defense – preventing the user...
This is the beginning of what’s going to be yet another series focusing on developing LOB applications with Silverlight. I’ve been wanting to write more on this topic since NTK, but there was always something else… In the series, I’ll build a sample application...
I’ve just started discovering Prism , mainly as a tool to help me use the MVVM with my apps. That said, by now, Prism proved itself with: Support for Commanding EventAggregator Unity integration Targeting both WPF and Silverlight EventAggregator is great...
Another powerful Silverlight 3 feature is navigation. The concept is very simple: provide a space on your main page, which you’ll later fill with custom content – pages. You’ll be able to navigate through these pages (by using browser’s Forward/Back buttons...
Had 2 talks at this year’s NT Konferenca . The first one was about building LOB application with Silverlight, starting from what can we do today with v2 (run a short, 2 min video of a Silverlight 2 LOB app we’re going to be releasing within few weeks...
A couple of weeks ago, I wrote a post about handling dynamic forms in Silverlight. With this continuation post, I’m going to make a few changes to the original project: 1. Implement a new, custom, field type and provide a template for it (I’ll write about...
The basic idea behind this post is to show a simple way for items/list controls to display each item data with a different template. The ideal candidate for such exercise are data forms, where user can enter different kinds of information - text, numbers...
This is a quick tip on making the ListBox items behave as disabled. You know the semaphore, right? STOP on red, GO on green? OK. I’m drilling this with my two-year old when driving her to kindergarten every morning so lately it’s probably stuck in my...
Tim Heuer published a great example on how to implement user authentication and role validation with ASP.NET Application Services in his Application Corner a while ago. It really works as expected, even with custom membership / role providers. And you...
One of the most common scenarios in LOB applications is a list control, displaying some sort of items, and clicking on an item provides the user with some details about selected item. This is called a Master-detail scenario. Take Microsoft Outlook, as...
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