CODEWITHSUNDEEP
wpfc#-4.0binding
yo chauhan
yo chauhan

Reputation: 12295

How to bind Parent UserControl Dependency Property to the Child UserControl ViewModel Property?

Hi I have 2 UserControls. Parent UserControl and Child UserControl and both have their own ViewModel. How can I bind Parent Control's Dependency Property to the Property in the ViewModel of Child Control. Any help will be appericiable. I can easily bind the Parent UserControl DependencyProperty to the Child Control Dependency Property . But the problem is how to bind it to ViewModel Property. Suppose I bind Tag Property of Child UserControl to the Dependency Property of ParentControl(upto here its fine) but now how I can Bind this Tag Property to the ViewModel Property.(I want to keep it simple and don't want to use Converter/Converter Parameter logic).Thanks in advance.

Upvotes: 0

Views: 3102

Answers (2)

Rachel
Rachel

Reputation: 132548

Typically your ViewModels are the DataContext (Data Layer) of your UserControls, so you can access the ViewModel of the child control by binding to the DataContext property

{Binding ElementName=MyChildUserControl, Path=DataContext.ChildViewModelProperty}

Upvotes: 2

Joachim Kerschbaumer
Joachim Kerschbaumer

Reputation: 9871

try something like 

{Binding Path=PathToParentDP, RelativeSource={RelativeSource AncestorType={x:Type ParentType}}}

Upvotes: 2

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