<CategoryAttribute("Brushes")>
Public Property OverlayBackground As Brush

Dim instance As UXDialogBox
Dim value As Brush
 
instance.OverlayBackground = value
 
value = instance.OverlayBackground

[CategoryAttribute("Brushes")]
public Brush OverlayBackground {get; set;}

public read-write property OverlayBackground: Brush; 

CategoryAttribute("Brushes")
public function get,set OverlayBackground : Brush

[CategoryAttribute("Brushes")]
public: __property Brush* get_OverlayBackground();
public: __property void set_OverlayBackground( 
   Brush* value
);

[CategoryAttribute("Brushes")]
public:
property Brush^ OverlayBackground {
   Brush^ get();
   void set (    Brush^ value);
}

<Intersoft:UXDialogBox Header="Title" Name="editDialogBox" 
                       Width="150" Height="150" HorizontalAlignment="Left" 
                       VerticalAlignment="Top" OverlayBackground="Black">
    <Grid Background="Transparent">
        <TextBlock Text="Content"></TextBlock>
    </Grid>
</Intersoft:UXDialogBox>

private void UXButton_Click(object sender, RoutedEventArgs e)
{
    editDialogBox.ShowDialog(null, (dialogResult) => { 
        
    });
}