private ViewerQueryGraph SampleQueryGraph()
{
ViewerQueryGraph vqg = new ViewerQueryGraph(new SubgraphViewerDrawer(this.CreateGraphics()));
Point p1 = new Point(150, 150);
Point p2 = new Point(120,270);
Point p3 = new Point(180, 270);
vqg.AddNode(p1);
vqg.AddNode(p2);
vqg.AddNode(p3);
vqg.SetLabel(1, "1");
vqg.SetLabel(2, "1");
vqg.SetLabel(3, "1");
vqg.AddEdge(1, 2);
vqg.AddEdge(1, 3);
UpdateLabelList();
return vqg;
}