WPF Tutorial : Concept Binding


Before this article, I have discussed about the architecture of WPF, Markup extensions, dependency properties, logical trees and Visual trees, layout, transformation etc. Today I will discuss what we call the most important part of any WPF application, the binding. WPF comes with superior DataBinding capabilities which enables the user to bind objects so that whenever the other object changes, the main object reflects its changes. The main motive of DataBinding is to ensure that the UI is always synchronized with the internal object structure automatically.

DataBinding was present before introduction of WPF. In ASP.NET we bind data elements to render proper data from the control. We generally pass in a DataTable and bind the Templates to get data from individual DataRows. On the other hand, in case of traditional windows forms application, we can also bind a property with a data element. The Bindings can be added to properties of objects to ensure whenever the property changes the value, the data is internally reflected to the data. So in one word, DataBinding is nothing new to the system. The main objective of DataBinding is to show data to the application and hence reducing the amount of work the application developer needs to write to just make the application properly display data. In this article, I will discuss how you could use the Databinding in WPF application and also create a sample application to demonstrate the feature in depth.

Binding in WPF

WPF puts the concept of Binding further and introduced new features, so that we could use the Binding feature extensively. Binding establishes the connection between the application and the business layers. If you want your application to follow strict design patter rules, DataBinding concept will help you to achieve that. We will look into greater detail with how to do that in a while.

In WPF we can bind two Properties, One Property and one DependencyProperty, two DependencyProperties etc. WPF also supports Command Binding.

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