RelativeResource的四种模式

碧山云游

于 2020-09-30 19:27:45 发布

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分类专栏： WPF开发

本文链接：https://blog.youkuaiyun.com/qq_41617901/article/details/108889474

本文详细介绍了WPF中RelativeSourceMode的四种模式：Self、FindAncestor、TemplatedParent和PreviousData，并提供了相应的代码示例，展示了如何在实际场景中应用这些绑定模式，以实现特定的界面效果。

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以下是MSDN中对public enum RelativeSourceMode的描述

FIELDS
FindAncestor	3	Refers to the ancestor in the parent chain of the data-bound element. You can use this to bind to an ancestor of a specific type or its subclasses. This is the mode you use if you want to specify AncestorType and/or AncestorLevel.
PreviousData	0	Allows you to bind the previous data item (not that control that contains the data item) in the list of data items being displayed.
Self	2	Refers to the element on which you are setting the binding and allows you to bind one property of that element to another property on the same element.
TemplatedParent	1	Refers to the element to which the template (in which the data-bound element exists) is applied. This is similar to setting a TemplateBindingExtension and is only applicable if the Binding is within a template.

下面我将对这四种模式进行一一的实现

Mode Self

把自身的宽度绑定到自身的高度上面。

<Rectangle Fill="Red" Name="rectangle" 
                Height="100" Stroke="Black" 
                Canvas.Top="100" Canvas.Left="100"
                Width="{Binding ElementName=rec