[WPFシリーズ-高度なTemplateBinding vs RelativeSource TemplatedParent]
3809 ワード
What is the difference between these 2 bindings:
and
TemplateBinding - More limiting than using regular Binding More efficient than a Binding but it has less functionality Only works inside a ControlTemplate's visual tree Doesn't work with properties on Freezables Doesn't work within a ControlTemplate's Trigger Provides a shortcut in setting properties(not as verbose),e.g. {TemplateBinding targetProperty}
Regular Binding - Does not have above limitations of TemplateBinding Respects Parent Properties Resets Target Values to clear out any explicitly set values Example:
One more thing - TemplateBindings don't allow value converting. They don't allow you to pass a Converter and don't automatically convert int to string for example (which is normal for a Binding).
TempleteBinding is a shorthand for Binding with TemplatedParent but it does not expose all the capabilities of the Binding class, for example you can't control Binding.Mode from TempleteBinding.
<ControlTemplate TargetType="{x:Type Button}">
<Border BorderBrush="{TemplateBinding Property=Background}">
<ContentPresenter />
</Border>
</ControlTemplate>and
<ControlTemplate TargetType="{x:Type Button}">
<Border BorderBrush="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Background}">
<ContentPresenter />
</Border>
</ControlTemplate>TemplateBinding - More limiting than using regular Binding
Regular Binding - Does not have above limitations of TemplateBinding
One more thing - TemplateBindings don't allow value converting. They don't allow you to pass a Converter and don't automatically convert int to string for example (which is normal for a Binding).
TempleteBinding is a shorthand for Binding with TemplatedParent but it does not expose all the capabilities of the Binding class, for example you can't control Binding.Mode from TempleteBinding.