“Striving for perfection” is probably the slogan when one of our project owners is writing requirements for our project. Over the past months we had to implement various UI enhancements which are not supported in WPF by default. Thanks to the flexibility of WPF, we managed to implement a lot of them. I will probably… Read More »
Recently I had to build a very dynamic DataGrid in WPF, in which the columns were constructed dynamically. And some rows did not contain data for each generated column. I stored the dynamic values in a dictionary and bound the dynamic columns to the indexer property. The problem was that the dictionary throw an KeyNotFoundException… Read More »
Every .NET developer has already used an Ambient Context without knowing it. A typical Ambient Context is: using (var tx = new TransactionScope()) { …. } The pattern is not very well known. Here is one good description I found: The Wandering Glitch – Ambient Context I found this pattern very useful for displaying progress/busy… Read More »
In one of my projects (WPF, WCF) we are working with server and client side entities. Although the entities look very similar, we had some reasons to separate them: – Client side entities require more logic -> Implementation of INotifyPropertyChanged -> Implementation of IEditableObject -> Restore handling (When user cancels edit) All these functionalities were… Read More »
I found the change tracking in WPF always a little bit painful, when working with simple POCOs without any change tracking context (for example ADO.NET EF). Therefore, I wrote a small library which simplifies the tracking. The Lib contains three interesting classes: EditableObject: Imlements the IEditableObject interfaces and handles the revert functionality and change tracking.… Read More »
In my last project (WPF/MVVM) I had to deal with a lot of data in the application. I stored the data in a ObservableCollection and bound the collection to a chart and a grid. Everything worked very well. But the data in the ObservableCollection changed frequently. By default, the ObservableCollection notifies every change in the… Read More »
This is a very small MVVM tutorial. I used the MVVM Light (Galasoft) framework. I like this framework because, it brings a lot of very useful features. The idea behind MVVM is to seperate the UI from the code. The most things I like are that your application is testable, “blendable” and you don’t have… Read More »
I often use my computer as a music player. But I don’t have a remote controller for it. If I want to change the song, I need to do it on my PC. That’s not cool. Yesterday I decided to build a remote control app for my Samsung Galaxy S (Android 2.0). This should solve… Read More »
WPF uses DirectX as its rendering engine. The framework allows much more than only 2D programming. Before we start with a simple 3D example, you should know some basics: 3D model A 3D model is an object that will be presented in your application. A model is defined by triangles. The triangles together build up… Read More »
With DataTables you have the ability to set a Error Message per Row. This is useful, when you want to display i.e. the Validation Errors in the GUI. In a 3-Tier Application your client communicates with the Application Server via Services. Exchanging DataTables in a .NET Application works well. But if your services are used… Read More »