XAML - Listview and ​Selected​Value

When an item in a Listview is selected and I programmatically set the SelectedValue to Null (or Nothing) I don't see any change in my Metro App. The item still appears to be selected. How can I fix this?

@ZippyV: set SeletectedItem to null

Same problem.

Did you set the SelectedValue binding mode to TwoWay ?

Yes.

Found it:

Public Property SelectedWord As String
    Get
        Return _SelectedWord
    End Get
    Set(value As String)
        RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs("SelectedWord"))
        _SelectedWord = value
    End Set
End Property

Raising the PropertyChanged event before changing the value of the property is a stupid idea.