public void CircleSelect(AxMapControl mapControl)
{
this.init();
IGeometry pGeometryC;
pGeometryC = mapControl.TrackCircle();
//新建选择集对象
ISelectionEnvironment pSelectionEnvC;
pSelectionEnvC = new SelectionEnvironmentClass();
//改变选择集的默认颜色
pSelectionEnvC.DefaultColor = pColor;
//选择要素,并将其放入选择集
mapControl.Map.SelectByShape(pGeometryC, pSelectionEnvC, false);
mapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection,
null, null);
}
