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Databinding is a fundamental part of the WPF, Silverlight and the Silverlight for Windows Phone 7 frameworks.
It is a powerful concept that once mastered allows you to write concise and elegant code.
For our example we'll look at a very simple UI which displays the details of an event, its name and the date of the event: The model that supports this view is shown below: , allowing us to detect changes in its properties.
We will use this to update the view when the model changes.
OK, so the title is a little ambitious, but there is nothing wrong with setting yourself lofty aims!
Because of the depth of this topic I have decided to split this tutorial up into a series of blog posts, each of which explore a different aspect of the binding framework.
We can see that we have three separate flows of data: The code for each of these three steps is distributed throughout our code, in the constructor and a variety of event handler.Yet for all its power, it is a little complex and that is my reason for launching into this blog series.The rough outline for this series is as follows: To understand what databinding is and the service it provides us with, it is worth looking at how you wire-up a user-interface without using databinding.Modifying the code for our example to use the WPF / Silverlight framework results in the following code: This is a big improvement on the previous 'manual' example where three separate event handlers were required to maintain synchronization between the model and the view.Databinding allows us to declare how the model is connected to the view, with the databinding framework taking care of the mechanics.