Can you bind a DataTrigger to an Attached Property?,
In WPF, is it possible for a DataTrigger to bind to an attached property?
I essentially want to use a converter on an attached property to provide a style when a particular validation rule has been broken. I am using markup like the following:
However, when this runs, I get the following:
System.Windows.Data Error: 39 :
BindingExpression path error:
‘Validation’ property not found on
‘object’ ”TextBox’ (Name=”)’.
DataItem=’TextBox’ (Name=”); target
element is ‘TextBox’ (Name=”); target
property is ‘NoTarget’ (type ‘Object’)
If I change my DataTrigger binding path to “Text”, I do not get the databinding error (but of course it does not provide the behaviour I am seeking).
You need to wrap the property in parentheses: