#131 – Dependency Properties Inherit Values from Higher Up in the Logical Tree

The value of a dependency property can come from a number of different sources, but the property often inherits its value from an element further up the logical tree.

This means that when you set a property value in XAML or in code, that value often “trickles down” the element tree and is applied to other elements that have a property of the same name.

Here’s an example.  The value of FontStyle for several controls is inherited from the top-level Window element.

<Window x:Class="WpfApplication1.MainWindow"
        Title="MainWindow" Height="350" Width="525" FontStyle="Italic">
    <StackPanel Orientation="Vertical">
        <Button Content="Run" Height="23" Width="75" />
        <Button Content="Skip" Height="23" Width="75" />
        <StackPanel Orientation="Horizontal">
            <Label Content="Inside 2nd StackPanel"/>
            <Label Content="I do my own FontStyle" FontStyle="Normal"/>

Here’s what the window looks like:

The value for a dependency property will not be inherited if that value is set explicitly (locally) in an element.


About Sean
Software developer in the Twin Cities area, passionate about software development and sailing.

One Response to #131 – Dependency Properties Inherit Values from Higher Up in the Logical Tree

  1. Pingback: #337 – Specifying Font Properties for All Controls In a Window « 2,000 Things You Should Know About WPF

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