Silverlight - MapPolyline Style

i'm trying apply style mappolyline.

i have style defined:

        <style x:key="routestyle" targettype="map:mappolyline">              <setter property="stroke">                  <setter.value>                      <solidcolorbrush color="magenta" />                  </setter.value>              </setter>              <setter property="strokethickness" value="10" />          </style>

 

and error when runs:

the property 'stroke' not found in type 'microsoft.maps.mapcontrol.mappolyline'.

 

which in contradiction this:

http://msdn.microsoft.com/en-us/library/microsoft.maps.mapcontrol.mappolyline_members.aspx

 

i wondered if maybe struggling find property because it's declared in base class. tried this:

        <style x:key="routestyle" targettype="mapcore:mapshapebase">              <setter property="stroke">                  <setter.value>                      <solidcolorbrush color="magenta" />                  </setter.value>              </setter>              <setter property="strokethickness" value="10" />          </style>

 

but still got:

the property 'stroke' not found in type 'microsoft.maps.mapcontrol.core.mapshapebase'.

 

 

am missing obvious?

to work around issue created 2 attached properties can used object inherits mapshapebase:

        #region stroke
        public static readonly dependencyproperty strokeproperty = dependencyproperty.registerattached(
            "stroke",
            typeof(brush),
            typeof(bingmapsbindinghelper),
            new propertymetadata(strokepropertychangedcallback));

        public static brush getstroke(mapshapebase mapshape)
        {
            return (brush)mapshape.getvalue(strokeproperty);
        }

        public static void settilesources(mapshapebase mapshape, brush value)
        {
            mapshape.setvalue(strokeproperty, value);
        }

        private static void strokepropertychangedcallback(object sender, dependencypropertychangedeventargs eventargs)
        {
            mapshapebase mapshape = (mapshapebase)sender;
            mapshape.stroke = (brush)eventargs.newvalue;
        }
        #endregion

        #region strokethickness
        public static readonly dependencyproperty strokethicknessproperty = dependencyproperty.registerattached(
            "strokethickness",
            typeof(double),
            typeof(bingmapsbindinghelper),
            new propertymetadata(strokethicknesspropertychangedcallback));

        public static double getstrokethickness(mapshapebase mapshape)
        {
            return (double)mapshape.getvalue(strokethicknessproperty);
        }

        public static void setstrokethickness(mapshapebase mapshape, double value)
        {
            mapshape.setvalue(strokethicknessproperty, value);
        }

        private static void strokethicknesspropertychangedcallback(object sender, dependencypropertychangedeventargs eventargs)
        {
            mapshapebase mapshape = (mapshapebase)sender;
            mapshape.strokethickness = (double)eventargs.newvalue;
        }
        #endregion

these can used in style setter follows:

        <style x:key="routestyle" targettype="map:mappolyline">
            <setter property="mapshared:bingmapsbindinghelper.stroke">
                <setter.value>
                    <solidcolorbrush color="magenta" />
                </setter.value>
            </setter>
            <setter property="mapshared:bingmapsbindinghelper.strokethickness" value="10" />
        </style>

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