Question

I have a DataGrid bound to a ViewModel’s property of type ObservableCollection. Inside DataGrid I have several DataGridTextColumns bound to item of the ObservableCollection. I need to access parent DataContext (ViewModel) to set Visibility property of one of the DataGridTextColumns.
There is a solution suggested over the internet:

{Binding DataContext.IsColumnVisible, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type MyControl}}}

IsColumnVisible property is of type System.Windows.Visibility. Such solution works for other properties like DataGridTextColumn.Binding, but doesn’t for DataGridTextColumn.Visibility!
Is there solution for Visibility?

EDIT: I finally adopted the following solution:
Bind datagrid column visibility MVVM

Answer 1

DataGrid-columns are abstract objects, you cannot target them using ElementName (lacking namescope) or RelativeSource (not in the visual tree).

Additionally DataGrid-columns have no DataContext…