Question

I want to apply the same properies to all my Polygons:

Polygon polygon = new Polygon();
polygon.StrokeThickness = 2;
polygon.Stroke = Brushes.Black;
polygon.Fill = (Brush)FindResource("HatchBrush");
polygon.ToolTip = (Image)FindResource("GapImg");

How can i do this?

Answer 1

You can use the Style property.

Define your style in a resource dictionary:

<Style x:Key="PolygonStyle" TargetType="Polygon">
    <Setter Property="Stroke" Value="Black" />
    <Setter Property="StrokeThickness" Value="2" />
    <Setter Property="Fill" Value="{StaticResource HatchBrush}" />
    <Setter Property="ToolTip" Value="{StaticResource GapImg}" />
</Style>

And then use FindResource for each Polygon:

Polygon polygon = new Polygon() 
{ 
    Style = FindResource("PolygonStyle") as Style,
};

If you need to apply the style to all your polygons just remove the x:Key and you will not even need to find the resource run-time.