topic Re: Dotted line symbol from code(not markup) in ArcGIS API for Silverlight Questions

Dotted line symbol from code(not markup)

Anonymous User — Wed, 21 Dec 2011 10:26:59 GMT

Hi guys,

Ive been trying to get a symbol with a simple fill and a dotted line as border. Here is what Ive got, although it does not seem to work:

LinearGradientBrush lgBrush = new LinearGradientBrush();
            lgBrush.StartPoint = new Point(0, 0);

            GradientStop gStop1 = new GradientStop();
            gStop1.Offset = 0.0;
            gStop1.Color = Color.FromArgb(0, 0, 255, 0);
            lgBrush.GradientStops.Add(gStop1);

            GradientStop gStop2 = new GradientStop();
            gStop2.Offset = 1.0;
            gStop2.Color = Color.FromArgb(0, 0, 255, 0);
            lgBrush.GradientStops.Add(gStop2);

            //Set up default symbol
            GraphicSymbol = new SimpleFillSymbol();
            GraphicSymbol.Fill = new SolidColorBrush(Color.FromArgb(120, 100, 100, 100));
            GraphicSymbol.BorderThickness = 5;
            GraphicSymbol.BorderBrush = lgBrush;

Can anyone see what Im doing wrong? I come from the Flex side of things so still a bit wobbly on the Silverlight.

Your help would be much appreciated.

Regards

Re: Dotted line symbol from code(not markup)

DominiqueBroux — Mon, 26 Dec 2011 10:24:41 GMT

It's easier to do that in XAML.
You need to redefine the ControlTemplate and set teh StrokeDashArray to define the style of line you need.

There are custom symbol samples here : http://help.arcgis.com/en/webapi/silverlight/samples/SymbolGalleryWeb/start.htm (unfortunately not exactly the one you are looking for)

Re: Dotted line symbol from code(not markup)

DominiqueBroux — Mon, 26 Dec 2011 11:23:08 GMT

You can also use 'ESRI.ArcGIS.Client.FeatureService.Symbols.SimpleFillSymbol' which has a 'BorderStyle' property.

I had forgotten that class was available in the latest API version.:o
Simpler than retemplating.