Tạo Flash cho đối tượng

HOW TO FLASH A FEATURE.

Example:

#region Flash Geometry

public void FlashGeometry(IGeometry geometry, IRgbColor color, IDisplay display, Int32 delay)
{
    if (geometry == null || color == null || display == null)
    {
        return;
    }
    display.StartDrawing(display.hDC, (System.Int16)ESRI.ArcGIS.Display.esriScreenCache.esriNoScreenCache); // Explicit Cast

    switch (geometry.GeometryType)
    {
        case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon:
            {
                //Set the flash geometry’s symbol.
                ESRI.ArcGIS.Display.ISimpleFillSymbol simpleFillSymbol = new ESRI.ArcGIS.Display.SimpleFillSymbolClass();
                simpleFillSymbol.Color = color;
                ESRI.ArcGIS.Display.ISymbol symbol = simpleFillSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
                symbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
                //Flash the input polygon geometry.
                display.SetSymbol(symbol);
                display.DrawPolygon(geometry);
                System.Threading.Thread.Sleep(delay);
                display.DrawPolygon(geometry);
                break;
            }
        case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline:
            {
                //Set the flash geometry’s symbol.
                ESRI.ArcGIS.Display.ISimpleLineSymbol simpleLineSymbol = new ESRI.ArcGIS.Display.SimpleLineSymbolClass();
                simpleLineSymbol.Width = 4;
                simpleLineSymbol.Color = color;
                ESRI.ArcGIS.Display.ISymbol symbol = simpleLineSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
                symbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
                //Flash the input polyline geometry.
                display.SetSymbol(symbol);
                display.DrawPolyline(geometry);
                System.Threading.Thread.Sleep(delay);
                display.DrawPolyline(geometry);
                break;
            }
        case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint:
            {
                //Set the flash geometry’s symbol.
                ESRI.ArcGIS.Display.ISimpleMarkerSymbol simpleMarkerSymbol = new ESRI.ArcGIS.Display.SimpleMarkerSymbolClass();
                simpleMarkerSymbol.Style = ESRI.ArcGIS.Display.esriSimpleMarkerStyle.esriSMSCircle;
                simpleMarkerSymbol.Size = 12;
                simpleMarkerSymbol.Color = color;
                ESRI.ArcGIS.Display.ISymbol symbol = simpleMarkerSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
                symbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
                //Flash the input point geometry.
                display.SetSymbol(symbol);
                display.DrawPoint(geometry);
                System.Threading.Thread.Sleep(delay);
                display.DrawPoint(geometry);
                break;
            }
        case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryMultipoint:
            {
                //Set the flash geometry’s symbol.
                ESRI.ArcGIS.Display.ISimpleMarkerSymbol simpleMarkerSymbol = new ESRI.ArcGIS.Display.SimpleMarkerSymbolClass();
                simpleMarkerSymbol.Style = ESRI.ArcGIS.Display.esriSimpleMarkerStyle.esriSMSCircle;
                simpleMarkerSymbol.Size = 12;
                simpleMarkerSymbol.Color = color;
                ESRI.ArcGIS.Display.ISymbol symbol = simpleMarkerSymbol as ESRI.ArcGIS.Display.ISymbol; // Dynamic Cast
                symbol.ROP2 = ESRI.ArcGIS.Display.esriRasterOpCode.esriROPNotXOrPen;
                //Flash the input multipoint geometry.
                display.SetSymbol(symbol);
                display.DrawMultipoint(geometry);
                System.Threading.Thread.Sleep(delay);
                display.DrawMultipoint(geometry);
                break;
            }
    }
    display.FinishDrawing();
}
#endregion