CODEWITHSUNDEEP
c#.netwpf
karollo
karollo

Reputation: 595

DataContext accessible from IMultiValueConverter

I have WPF application and I need to bind two arguments (no matter what they are) to calculate the value (checkbox checked or not). So I have to use IMultiValueConverter and that's fine.

But is there a way, to give this converter access to DataContext (ViewModel) of a window I am binding to?

Basically I have some checkboxes in treeview, i need to pass to converter content (text) of theese checkboxes and its parent's header. Then in converter I need to process that text and find out if it's present in some collection I have in my ViewModel (DataContext). I know that I cannot use ConverterParameter, because it doesn't support binding.

Upvotes: 0

Views: 173

Answers (1)

mm8
mm8

Reputation: 169360

Just add another Binding to your MultiBinding that binds to the view model, e.g.:

<MultiBinding Converter="{StaticResource converter}">
    <Binding Path="Property1" />
    <Binding Path="Property2" />
    <Binding Path="DataContext" RelativeSource="{RelativeSource AncestorType=Window}" />
</MultiBinding>

Upvotes: 2

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