下面是MVVM架构的一个更直观的解释:

我没有阅读每个答案，但我只是想添加这个信息，以防按钮的相对源命令绑定。

当你使用Mode= find祖宗的相对源时，绑定必须像这样:

Command="{Binding Path=DataContext.CommandProperty, RelativeSource={...}}"

如果你没有在你的路径中添加DataContext，在执行时它不能检索属性。

不要忘记TemplatedParent:

<Binding RelativeSource="{RelativeSource TemplatedParent}"/>

or

{Binding RelativeSource={RelativeSource TemplatedParent}}

如果你想绑定到对象上的另一个属性:

{Binding Path=PathToProperty, RelativeSource={RelativeSource Self}}

如果你想获取一个祖先的属性:

{Binding Path=PathToProperty,
    RelativeSource={RelativeSource AncestorType={x:Type typeOfAncestor}}}

如果你想在父模板上获得一个属性(所以你可以在一个ControlTemplate中做2种方式绑定)

{Binding Path=PathToProperty, RelativeSource={RelativeSource TemplatedParent}}

或者更短(这只适用于OneWay绑定):

{TemplateBinding Path=PathToProperty}

下面是MVVM架构的一个更直观的解释:

Binding RelativeSource={
    RelativeSource Mode=FindAncestor, AncestorType={x:Type ItemType}
}
...

RelativeSource的默认属性是Mode属性。这里给出了一组完整的有效值(来自MSDN):

PreviousData Allows you to bind the previous data item (not that control that contains the data item) in the list of data items being displayed. TemplatedParent 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. Self 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. FindAncestor 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.