ArcEngine 画图

方法一：

private void DrawMapShape(IGeometry geometry){    ISimpleFillSymbol simpleFillSymbol;    simpleFillSymbol = new SimpleFillSymbolClass();    simpleFillSymbol.Style = esriSimpleFillStyle.esriSFSNull;    IRgbColor color = new RgbColorClass();    color.Green = 137;    color.Blue = 209;    ILineSymbol line = new SimpleLineSymbolClass();    line.Color = color;    line.Width = 3;    simpleFillSymbol.Outline = line;    object symbol = simpleFillSymbol;    base.m_pMapCtrl.DrawShape(geometry, ref symbol);}

方法二：

private void AddElement(IGeometry geometry){    IPolygonElement polygonElement;    polygonElement = new PolygonElementClass();    IElement element;    element = polygonElement as IElement;    element.Geometry = geometry;    IGraphicsContainer graphicsContainer = base.m_pMapCtrl.Map as IGraphicsContainer;    graphicsContainer.AddElement((IElement)polygonElement, 0);    base.m_pMapCtrl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);}

方法三：

private void DrawEnvelope(IEnvelope newEnvelope){    short cacheID = base.m_pMapCtrl.ActiveView.ScreenDisplay.AddCache();    ISimpleFillSymbol fillSymbol = new SimpleFillSymbolClass();    IRgbColor rgbColor = new RgbColorClass();    rgbColor.Red = 255;    fillSymbol.Color = rgbColor;    base.m_pMapCtrl.ActiveView.ScreenDisplay.StartDrawing(base.m_pMapCtrl.ActiveView.ScreenDisplay.hDC, cacheID);    base.m_pMapCtrl.ActiveView.ScreenDisplay.SetSymbol((ISymbol)fillSymbol);    base.m_pMapCtrl.ActiveView.ScreenDisplay.DrawRectangle(newEnvelope);    base.m_pMapCtrl.ActiveView.ScreenDisplay.FinishDrawing();}