How many types of binding in silverlight

Databinding is the process of establishing a connection between a source and target. In Silverlight databinding, the source is the CRL object and the target is Silverlight controls (XAML Elements). Let me show you a visual.

Binding Modes

There are three types of data binding that happens in Silverlight applications between a source and target.

1. OneTime data binding
2. OneWay data binding (default mode)
3. TwoWay data binding

OneTime data binding: As the name suggests, data binding happens between the source and target only once. In this binding, the source (CRL object) data will bind with the target (XAML element) only when the page executes the first time. Later on, any changes made in the source will not be reflected back in the target element. You will prefer to use this binding mode to reduce overhead if you know that the source property won’t change.
OneWay data binding: In this data binding, the source will immediately inform about changes to the target control. We will be using this binding only for frequently changed elements. This is the default mode.
TwoWay data binding: This happens in bidirectional mode. Whenever any change occurs in the backend or the CRL object, it will inform to the XAML controls immediately, and vice versa.