Bindings allow you to wire up connections between objects or elements and allow them to respond to changes when the object they are bound to is updated. The first example monitors an input field… when you update one input field, it updates a target element as well … in this example we’re introduced to the Sys.Binding class, new to ASP.NET AJAX 4.0. In the second example we add a handler to the Convert event … which will allow you to perform conditional checks or format the input before updating the target element. Next we demonstrate binding in two directions … change in either input field will cause a change in the other input field. Finally we link this concept to the previous video on the new “observable” functionality … this example will update the UI any time the underlying javascript data objects are changed. This example uses Sys.Observer and a JavaScript Alert to demonstrate when the underlying data object changes.

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About this video:

Duration: 16 Minutes, 33 Seconds
Recorded Using: Visual Studio 2010 Beta 1 or Greater