This also provides a few ways to obtain the property name programmatically, instead of having to hard code it. One way to simplify the situation is with a base class, in order to reuse some of the boilerplate logic. There are several techniques people have developed in response, in order to maintain their sanity (see, for example, the Stack Overflow question at bit.ly/24ZQ7CY) most of them fall into one of two types. New Propert圜hangedEventArgs('UnreadItemCount')) // Yuck Here’s an example: public int UnreadItemCount This will not endear you to your successors. Manually raising the event with hardcoded textual property names isn’t a solution that scales well, nor does it stand up to refactoring: You must take care to ensure the textual name remains in sync with the property name in the code. The interface is simple, but implementing it isn’t.

The object should raise this event when a bindable property changes, in order to notify the view that it should refresh its representation of the property’s value. It’s simple enough, containing just one member: the Propert圜hanged event. Implementing INotifyPropert圜hanged is the preferred way to enable an object to be bound to a UI. You can obtain the finished version of the framework I develop here in the accompanying code download, or add the SolSoft.DataBinding NuGet package to your own projects. After that, I’ll develop a technique you might not have considered (“A Third Way”), and introduce solutions to related design difficulties encountered when developing applications using MVVM. Over the years, various toolkits and techniques have come along to lessen the pain this article aims to simplify the process even further.įirst, I’ll review the basics of implementing data binding, as well as common techniques to simplify it (if you’re already familiar with the subject, feel free to skip those sections).

The drawback of implementing data binding has always been the need for magic strings and boilerplate code, both to broadcast changes to the properties and to bind UI elements to them. NET Framework since the beginning, data binding became more prominent with the advent of Windows Presentation Foundation (WPF) and XAML, as it forms the “glue” between the View and ViewModel in the Model-View-ViewModel (MVVM) pattern. NETĭata binding is a powerful technique for developing UIs: It makes it easier to separate view logic from business logic, and easier to test the resulting code. Volume 31 Number 7 A Better Way to Implement Data Binding in.

Vb net 2010 get bound data