Samuel Moura

Quick introduction to MVVM design pattern for WPF

Samuel Moura — Wed, 18 Aug 2010 22:16:32 +0000

A quick introduction to get you started with M-V-VM (Model-View-ViewModel). The MVVM pattern is introduced in a very straight forward way with some code examples.

Creating a Printer selection ComboBox with default printer

Samuel Moura — Fri, 13 Aug 2010 10:12:33 +0000

In this tutorial I will show you how to create a ComboBox that lists all the printers installed on your computer and automatically selects the default printer.

RhinoMocks Stub not retaining value when property shadowed on inheriting interface

Samuel Moura — Sat, 06 Feb 2010 15:25:15 +0000

I cannot remember having a Sprint like this! First the issue with debugging in VS2008 on Windows7 x64, then the issue with BadImageFormatException throwing when inheritance constraints were applied to a generic method, and now this one! The Problem I was still fixing the tests that had failed after upgrading to Castle.Windsor 2.1 and RhinoMocks [...]

BadImageFormatException when debugging interface mocked with RhinoMocks

Samuel Moura — Sat, 06 Feb 2010 01:47:00 +0000

My last couple of days has been quite hilarious. First there was the issue with not being able to set breakpoints on my tests, and then started having tests that failed one way when executed normally and a different way when I ran them with debugger attached! The Problem Recently I updated the project I [...]

Why breakpoints do not get hit when targeting x86 on Windows 7 x64?

Samuel Moura — Mon, 01 Feb 2010 11:19:29 +0000

This is a very particular scenario. It happened to me and cost me over 3 hours to fix it. Background I am currently working on a fully managed WPF application, that references a certified C# DLL that was purposely compiled targeting x86 platform (part of the certification process I think). Since I recently got an [...]

Why does the DependencyProperty I set using a DataTrigger does not get its value?

Samuel Moura — Sun, 31 Jan 2010 11:20:00 +0000

This is a common mistake when developing WPF applications. It has happened to me countless times and I have seen people asking questions about it many times. The Problem I have a Style which defines a DataTrigger to change some property on a control based on a bounded value from the ViewModel. Let’s take a [...]

Using FileSystemWatcher to synchronize ComboBox options

Samuel Moura — Thu, 20 Aug 2009 12:03:19 +0000

In this post I will present you with my latest addition to my personal user experience arsenal: direct file system synchronization. You will be shown how easily it is for you to setup a FileSystemWatcher to observe file changes on disc, astonishing your user when he least expects.

Playing Storyboards on DataTriggers to animate a Path

Samuel Moura — Wed, 08 Jul 2009 23:03:19 +0000

In the application I am working on, we had to display an image accordingly to the value of a field in our ViewModel represented by an Enum. The Enum had 3 possible values: normal, up or down. An arrow pointing up, right or down was to be drawn as a result of the bounded field’s [...]

WPF Toolkit DataGrid Part IV: TemplateColumns and Row Grouping

Samuel Moura — Mon, 15 Jun 2009 22:05:33 +0000

This post is part of the WPF Toolkit DataGrid series. Here is a list with the complete set of blog posts: Part I – Introduction Part II – Custom Styling Part III – Playing with Columns and Cells Part IV – TemplateColumns and Row Grouping Introduction In Part III we got to know a bit [...]

WPF Toolkit DataGrid, Part III – Playing with Columns and Cells

Samuel Moura — Tue, 19 May 2009 20:37:34 +0000

This post is part of the WPF Toolkit DataGrid series. Here is a list with the complete set of blog posts: Part I – Introduction Part II – Custom Styling Part III – Playing with Columns and Cells Introduction In Part II we gave a bluish style to our DataGrid. In this part we will [...]