To help new developers, here is a sample WPF application (that use the Northwind database) developed by using the pattern MVVM ( Model View ViewModel ). The goal of this little application is just to give another example that will help to understand this new pattern that is really powerful ! I will try...

When you are working with WPF and MVVM Pattern , you can regret that the designer doesn’t get data, in design time, that allow him to simply modified the graphical interface. To help my developments, I’ve created a little attached property which will create an instance of the type passed in parameter...

At Innoveo Solutions we are using .NET and WPF for our Innoveo Skye ® Editor application. Skye® Editor is a distribution channel editor targeting business people letting them edit and configure their insurance products. From the beginning we have adopted the Model-View-ViewModel architecture. Having...

For some reason the family of design patterns that exist around the Model View Controller pattern seem to be an elusive band of characters. The first time I encountered Model View Controller I studied the text hard trying to understand how the Strategy , Observer and Composite patterns worked together...

Over the years I have spent a fair amount of time thinking about design patterns surrounding the presentation layer . Just as your values as a grown-up are often determined by experiences you have as a child – I think my interest in these patterns stem from frustrations I had as a newbie developer. When...

In this post i want to describe the approach of connecting View and ViewModel which I'm using in my last project. The main idea is to do it during resolve inside of unity container. It can be achived using InjectionFactory introduced in Unity 2.0 public static class MVVMUnityExtensions { public static...

Today I've tried to find a way how to pass EventArgs as CommandParameter to DelegateCommand triggered by EventTrigger. By reverse engineering of default InvokeCommandAction I find that blend team just ignores event args. To resolve this issue I have created my own action for triggering delegate commands...

Author, Microsoft MVP and accomplished pianist Josh Smith , Sr. UX Developer at IdentityMine , joins the show to discuss some of Model View ViewModel’s more advanced scenarios. Full Speed: download Fast Version: download Josh shares is experience using MVVM gives some real-world advice on: Using modal...

Since few days i have been struggling to bind a gridview from a simple WCF async call. Following article look promising… http://blogs.telerik.com/vladimirenchev/posts/09-10-16/how_to_silverlight_grid_hierarchy_load_on_demand_using_mvvm_and_ria_services.aspx I conclude binding is not simple traditional...

In this article I am going to walk through an application using WPF and Prism (aka composite application guidance, CAG) which simulates engaging a taxi (cab). The rules are simple, the app would have3 screens A login screen to authenticate the user An information screen. A screen to engage the cab and...