ArcGIS API for Silverlight uses Geometryservice to solve the intersection of lines and lines

Draw Line

void Btn_mouseleftbuttondown (object sender, MouseButtonEventArgs e)
{

Button BTN = sender as Button;
var geometry = btn. Tag as ESRI. ArcGIS.Client.Geometry.Polyline;
Collection of storage line features
List<esri. arcgis.client.geometry.polyline> Polylinelistgrid = new List<esri. Arcgis.client.geometry.polyline> ();
List<esri. arcgis.client.geometry.polyline> polylinelistriver = new List<esri. Arcgis.client.geometry.polyline> ();
Polylinelistgrid.add (geometry as ESRI. ArcGIS.Client.Geometry.Polyline);
Geometryservice.trimextendasync (Polylinelistgrid, centergraphic.geometry as ESRI. ArcGIS.Client.Geometry.Polyline, curveextension.defaultcurveextension);
geometryservice.trimextendcompleted + = geometryservice_trimextendcompleted;
}

Perform analysis

void Geometryservice_trimextendcompleted (object sender, Graphicseventargs e)
{
MapPoint point = null;
foreach (Graphic g in E.results)
{
if (g.geometry.extent! = null)
{
Glayer. Graphics.clear ();
Layer. Graphics.clear ();
var pline = G.geometry as ESRI. ArcGIS.Client.Geometry.Polyline;
Graphic GG = new Graphic ()
//{
Geometry = Pline,
Symbol = new Loadmapresource (). Getsymbolbykey ("Drawobjectlinesymbol") as Linesymbol
//};
Glayer. Graphics.add (GG);
var gline = Centergraphic.geometry as ESRI. ArcGIS.Client.Geometry.Polyline;
var len1 = getmindistance (gline. Paths[0][0], Gline. Paths[0][gline. Paths[0]. Count-1], Pline. Paths[0][0]);
var len2 = getmindistance (gline. Paths[0][0], Gline. Paths[0][gline. Paths[0]. Count-1], Pline. Paths[0][pline. Paths[0]. Count-1]);
if (Len1 > Len2)
{
Point = Createmappoint (pline. Paths[0][pline. Paths[0]. COUNT-1]. X, Pline. Paths[0][pline. Paths[0]. COUNT-1]. Y);
}
Else
{
Point = Createmappoint (pline. Paths[0][0]. X, Pline. Paths[0][0]. Y);
}
Addpointgraphic (point);
}
}
}

Constructs a point from X, y
Public MapPoint Createmappoint (double x, double y)
{
return new MapPoint (x, y);
}
Add a point to the layer
public void Addpointgraphic (ESRI. ArcGIS.Client.Geometry.MapPoint point)
{
Graphic g = new Graphic ()
{
Geometry = Point,
Symbol = new Loadmapresource (). Getsymbolbykey ("Drawobjectpointsymbol") as Markersymbol,
};
Glayer. Graphics.add (g);

}

ArcGIS API for Silverlight uses Geometryservice to solve the intersection of lines and lines