In a previous post I showed you how to use IDataErrorInfo interface to implement simple validation mechanism in WPF MvvM application. In this post we will try to extend and customize this approach a little.
Windows Presentation Foundation allows us to create our own value converters and use them in XAML bindings. WPF also comes with a set of predefined converters. One of them is BooleanToVisibilityConverter. It this post I will show you how to create own version of this converter with parameter feature supported.
I wanted to have a reusable email validator since there have been a few cases already where I needed one. Previously I just used the RegularExpressionAttribute but that’s verbose for email. So, without thinking much, I created an attribute that derived from RegularExpressionAttribute and supplied it with a regex I used – that turned out to be a surprise.
I’ve heard a lot of advice about how I should and how I should not concatenate strings. I’ve stuck to them, but the moment of questioning was inevitable. So I spun up a small app to see what’s what. If you’re interested, read along.
In this post I would like to point out the main practical differences between ASP.NET Web API and WCF Data Services (OData). For those who does not yet know too much about Web API there is a lot of articles and tutorial about this topic on the net. The starting point is of course Microsoft ASP.NET team site which provides all related information and a bunch of tutorials. Concer…