relativesource - w3toppers.com

How to access a control from a ContextMenu menuitem via the visual tree?

This is happening because DataContext=”{Binding PlacementTarget,… binding would set the button as MenuItems DataContext but that won’t add the ContextMenu to the VisualTree of your window and that’s why ElementName binding’s won’t work. A simple workaround to use ElementName bindings is to add this in your Window/UserControl’s code-behind: NameScope.SetNameScope(contextMenuName, NameScope.GetNameScope(this)); Another solution is to do … Read more

RelativeSource binding from a ToolTip or ContextMenu

This is tricky because ToolTip is not part of the VisualTree. Here you see a cool solution for the same problem with ContextMenus. The same way you can go for the ToolTip. UPDATE Sadly the link is gone and I have not found the referenced article anymore. As far as I remember, the referenced blog … Read more

WPF TemplateBinding vs RelativeSource TemplatedParent

TemplateBinding is not quite the same thing. MSDN docs are often written by people that have to quiz monosyllabic SDEs about software features, so the nuances are not quite right. TemplateBindings are evaluated at compile time against the type specified in the control template. This allows for much faster instantiation of compiled templates. Just fumble … Read more

How do I use WPF bindings with RelativeSource?

If you want to bind to another property on the object: {Binding Path=PathToProperty, RelativeSource={RelativeSource Self}} If you want to get a property on an ancestor: {Binding Path=PathToProperty, RelativeSource={RelativeSource AncestorType={x:Type typeOfAncestor}}} If you want to get a property on the templated parent (so you can do 2 way bindings in a ControlTemplate) {Binding Path=PathToProperty, RelativeSource={RelativeSource TemplatedParent}} … Read more