I realized that appears this interface in .NET Framework 4.5
I was looking first for about how to implemented in Silverlight (I can imagine that it's implemented in the same way), but I can't find a compact demo of this new interface. Is it possible to show how can I use it?
I really want to find a small demo to understand it
Beside the very detailed description on MSDN about the Silverlight version of INotifyDataErrorInfo
There are already some blog posts with samples how to use/implement it in WPF 4.5:
- WPF 4.5 – Asynchronous validation (original link no longer working) Wayback Link
- WPF 4.5 – Part 1 : Asynchronous data validation (the author has a nice series about the new fetaures in WPF 4.5)
The PRISM library has a very good example implementation in the MVVM RI sample, the class named DomainObject implements both INotifyPropertyChanged and INotifyDataErrorInfo.
It is a SL version but it now compiles with .NET 4.5
来源：https://stackoverflow.com/questions/9950128/how-to-implement-inotifydataerrorinfo-in-wpf-4-5