Question

I can’t set programmatically this binding:

<i:Interaction.Triggers>
    <i:EventTrigger EventName="MouseLeftButtonDown">
        <i:InvokeCommandAction Command="{Binding Path=Document.MyDelegateCommandProperty}" />
    </i:EventTrigger>
</i:Interaction.Triggers>

I tried with:

InvokeCommandAction ica = new InvokeCommandAction();
Binding actionCommandBinding = new Binding("Document.MyDelegateCommandProperty");
BindingOperations.SetBinding(ica, InvokeCommandAction.CommandProperty, actionCommandBinding);
System.Windows.Interactivity.EventTrigger eventTrigger = new System.Windows.Interactivity.EventTrigger("MouseLeftButtonDown");
eventTrigger.Actions.Add(ica);
eventTrigger.Attach(myUiElement);

Anyone can help?

Answer 1

Never used Binding in code but according to MSDN example for Binding class you must set the Binding.Source property

Binding actionCommandBinding = new Binding("Document.MyDelegateCommandProperty");
actionCommandBinding.Source = ......

and you just passing string in constructor without source object/Datacontext.

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