Wednesday, July 22, 2009

What’s New In Silverlight 3 – Element Binding

by jesseliberty via Jesse Liberty - Silverlight Geek on 7/22/2009 2:41:00 PM

In Silverlight 3 you can now use one User Interface element as the binding object for another. This can greatly simplify your code. For example, if you wish to display the value of a slider in a text box, there is no need to create a data object to mediate their connection; you can bind the text box directly to the slider:

   1: <Slider x:Name="sUnBound"

   2:     LargeChange="10"

   3:     Maximum="100"

   4:     SmallChange="1"

   5:     Value="50"

   6:     VerticalAlignment="Bottom" />

   7:  

   8:  <TextBlock x:Name="valueFromElement"

   9:   Text="{Binding Value, Mode=OneWay, 

  10:        ElementName=sUnBound}" />

Putting this in a new application will create a slider and a TextBlock and will bind the latter to the former and no code-behind is required at all.

Much more on this in the Mini-tutorial on Element Binding.

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