How do I use WPF bindings with RelativeSource?

Question

How do I use RelativeSource with WPF bindings and what are the different use-cases?

Answer 1

I didn't read every answer, but I just want to add this information in case of relative source command binding of a button.

When you use a relative source with Mode=FindAncestor, the binding must be like:

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

If you don't add DataContext in your path, at execution time it can't retrieve the property.