ArcGIS.Server.9.2.DotNet在ElementGraphicsLayer画点、线、折线、面、圆、矩形的代码

ArcGIS.Server.9.2.DotNet在ElementGraphicsLayer画点、线、折线、面、圆、矩形的代码：

  1 public   class  AddTool:IMapServerToolAction  
  2      {
  3
  4
  5        public void ServerAction(ESRI.ArcGIS.ADF.Web.UI.WebControls.ToolEventArgs args)
  6        {
  7            //获取map控件
  8            ESRI.ArcGIS.ADF.Web.UI.WebControls.Map adfMap = (ESRI.ArcGIS.ADF.Web.UI.WebControls.Map)args.Control;
  9            ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapFunctionality adfGraphicsMapFunctionality = null;
 10
 11            if (args is PointEventArgs)
 12            {
 13                //转成点
 14                PointEventArgs pointEventArgs = (PointEventArgs)args;
 15                //屏幕点
 16                System.Drawing.Point screenPoint = pointEventArgs.ScreenPoint;
 17                //屏幕坐标转成地理坐标
 18                ESRI.ArcGIS.ADF.Web.Geometry.Point adfPoint = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(screenPoint.X, screenPoint.Y, adfMap.GetTransformationParams(ESRI.ArcGIS.ADF.Web.Geometry.TransformationDirection.ToMap));
 19                
 20                //MapFunctionality
 21                foreach (ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality mapFunctionality in adfMap.GetFunctionalities())
 22                {
 23                    //当Resource为ADFGraphicsResource,ADFGraphicsResource为GraphicsLayer， 保存在内存中用显示临时图层
 24                    if (mapFunctionality.Resource.Name == "GraphicsResource")
 25                    {
 26                        adfGraphicsMapFunctionality = (ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapFunctionality)mapFunctionality;
 27                        break;
 28                    }
 29                }
 30                //从adfGraphicsMapFunctionality获取名为Element Graphics的DataTable
 31                //ElementGraphicsLayers通常用来显示图形元素，例如显示Map中被选择的图形元素。图层并不用来存储属性，而可以存储不同的图形类型。
 32                ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer elementGraphicsLayer = null;
 33                foreach (System.Data.DataTable dataTable in adfGraphicsMapFunctionality.GraphicsDataSet.Tables)
 34                {
 35                    if (dataTable.TableName == "Element Graphics")
 36                    {
 37                        elementGraphicsLayer = (ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer)dataTable;
 38                        break;
 39                    }
 40                }
 41                //如果名为Element Graphics的DataTable为null，就新建Element Graphics DataTable添加到adfGraphicsMapFunctionality.GraphicsDataSet中,同时刷新Toc1显示
 42                if (elementGraphicsLayer == null)
 43                {
 44                    elementGraphicsLayer = new ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer();
 45                    elementGraphicsLayer.TableName = "Element Graphics";
 46                    adfGraphicsMapFunctionality.GraphicsDataSet.Tables.Add(elementGraphicsLayer);
 47                }
 48
 49                //定义标点样式
 50                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol simpleMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol();
 51                //simpleMarkerSymbol.Type = ESRI.ArcGIS.ADF.Web.Display.Symbol.MarkerSymbolType.Star;
 52                simpleMarkerSymbol.Color = System.Drawing.Color.Green;
 53                simpleMarkerSymbol.Width = 10;
 54
 55                //定义标点选中样式
 56                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol simpleSelectedMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol();
 57                simpleSelectedMarkerSymbol.Color = System.Drawing.Color.Yellow;
 58                simpleSelectedMarkerSymbol.Width = 12;
 59                simpleSelectedMarkerSymbol.Type = ESRI.ArcGIS.ADF.Web.Display.Symbol.MarkerSymbolType.Star;
 60
 61                ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement graphicElement = new ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement(adfPoint, simpleMarkerSymbol, simpleSelectedMarkerSymbol);
 62                //把标点添加到elementGraphicsLayer
 63                elementGraphicsLayer.Add(graphicElement);
 64                
 65            }
 66            else if(args is LineEventArgs)
 67            {
 68                //转成点
 69                LineEventArgs lineEventArgs = (LineEventArgs)args;
 70                //屏幕点
 71                //屏幕坐标转成地理坐标
 72                ESRI.ArcGIS.ADF.Web.Geometry.Point adfPoint1 = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(lineEventArgs.BeginPoint.X, lineEventArgs.BeginPoint.Y, adfMap.GetTransformationParams(ESRI.ArcGIS.ADF.Web.Geometry.TransformationDirection.ToMap));
 73                //屏幕坐标转成地理坐标
 74                ESRI.ArcGIS.ADF.Web.Geometry.Point adfPoint2 = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(lineEventArgs.EndPoint.X, lineEventArgs.EndPoint.Y, adfMap.GetTransformationParams(ESRI.ArcGIS.ADF.Web.Geometry.TransformationDirection.ToMap));
 75                ESRI.ArcGIS.ADF.Web.Geometry.Path pa=new ESRI.ArcGIS.ADF.Web.Geometry.Path();
 76                pa.Points.Add(adfPoint1);
 77                pa.Points.Add(adfPoint2);
 78                ESRI.ArcGIS.ADF.Web.Geometry.Polyline Line = new ESRI.ArcGIS.ADF.Web.Geometry.Polyline();
 79                Line.Paths.Add(pa);
 80
 81                //MapFunctionality
 82                foreach (ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality mapFunctionality in adfMap.GetFunctionalities())
 83                {
 84                    //当Resource为ADFGraphicsResource,ADFGraphicsResource为GraphicsLayer， 保存在内存中用显示临时图层
 85                    if (mapFunctionality.Resource.Name == "GraphicsResource")
 86                    {
 87                        adfGraphicsMapFunctionality = (ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapFunctionality)mapFunctionality;
 88                        break;
 89                    }
 90                }
 91                //从adfGraphicsMapFunctionality获取名为Element Graphics的DataTable
 92                //ElementGraphicsLayers通常用来显示图形元素，例如显示Map中被选择的图形元素。图层并不用来存储属性，而可以存储不同的图形类型。
 93                ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer elementGraphicsLayer = null;
 94                foreach (System.Data.DataTable dataTable in adfGraphicsMapFunctionality.GraphicsDataSet.Tables)
 95                {
 96                    if (dataTable.TableName == "Element Graphics")
 97                    {
 98                        elementGraphicsLayer = (ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer)dataTable;
 99                        break;
100                    }
101                }
102                //如果名为Element Graphics的DataTable为null，就新建Element Graphics DataTable添加到adfGraphicsMapFunctionality.GraphicsDataSet中,同时刷新Toc1显示
103                if (elementGraphicsLayer == null)
104                {
105                    elementGraphicsLayer = new ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer();
106                    elementGraphicsLayer.TableName = "Element Graphics";
107                    adfGraphicsMapFunctionality.GraphicsDataSet.Tables.Add(elementGraphicsLayer);
108                }
109
110                //定义标点样式
111                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleLineSymbol simpleMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleLineSymbol();
112                //simpleMarkerSymbol.Type = ESRI.ArcGIS.ADF.Web.Display.Symbol.MarkerSymbolType.Star;
113                simpleMarkerSymbol.Color = System.Drawing.Color.Red;
114                simpleMarkerSymbol.Width = 3;
115                simpleMarkerSymbol.Type = ESRI.ArcGIS.ADF.Web.Display.Symbol.LineType.Dash;
116                //定义标点选中样式
117                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleLineSymbol simpleSelectedMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleLineSymbol();
118                simpleSelectedMarkerSymbol.Color = System.Drawing.Color.Yellow;
119                simpleSelectedMarkerSymbol.Width = 3;
120                //simpleSelectedMarkerSymbol.Type = ESRI.ArcGIS.ADF.Web.Display.Symbol.MarkerSymbolType.Star;
121
122                ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement graphicElement = new ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement(Line, simpleMarkerSymbol, simpleSelectedMarkerSymbol);
123                //把标点添加到elementGraphicsLayer
124                elementGraphicsLayer.Add(graphicElement);
125                
126            }
127            else if (args is PolylineEventArgs)
128            {
129                PolylineEventArgs lineEventArgs = (PolylineEventArgs)args;
130                ESRI.ArcGIS.ADF.Web.Geometry.Path pa = new ESRI.ArcGIS.ADF.Web.Geometry.Path();
131                for (int i = 0; i <= lineEventArgs.Vectors.Length - 1; i++)
132                {
133                    ESRI.ArcGIS.ADF.Web.Geometry.Point point = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(lineEventArgs.Vectors[i].X, lineEventArgs.Vectors[i].Y, adfMap.GetTransformationParams(ESRI.ArcGIS.ADF.Web.Geometry.TransformationDirection.ToMap));
134                    pa.Points.Add(point);
135                }
136                ESRI.ArcGIS.ADF.Web.Geometry.Polyline Line = new ESRI.ArcGIS.ADF.Web.Geometry.Polyline();
137                Line.Paths.Add(pa);
138
139                //MapFunctionality
140                foreach (ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality mapFunctionality in adfMap.GetFunctionalities())
141                {
142                    //当Resource为ADFGraphicsResource,ADFGraphicsResource为GraphicsLayer， 保存在内存中用显示临时图层
143                    if (mapFunctionality.Resource.Name == "GraphicsResource")
144                    {
145                        adfGraphicsMapFunctionality = (ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapFunctionality)mapFunctionality;
146                        break;
147                    }
148                }
149                //从adfGraphicsMapFunctionality获取名为Element Graphics的DataTable
150                //ElementGraphicsLayers通常用来显示图形元素，例如显示Map中被选择的图形元素。图层并不用来存储属性，而可以存储不同的图形类型。
151                ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer elementGraphicsLayer = null;
152                foreach (System.Data.DataTable dataTable in adfGraphicsMapFunctionality.GraphicsDataSet.Tables)
153                {
154                    if (dataTable.TableName == "Element Graphics")
155                    {
156                        elementGraphicsLayer = (ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer)dataTable;
157                        break;
158                    }
159                }
160                //如果名为Element Graphics的DataTable为null，就新建Element Graphics DataTable添加到adfGraphicsMapFunctionality.GraphicsDataSet中,同时刷新Toc1显示
161                if (elementGraphicsLayer == null)
162                {
163                    elementGraphicsLayer = new ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer();
164                    elementGraphicsLayer.TableName = "Element Graphics";
165                    adfGraphicsMapFunctionality.GraphicsDataSet.Tables.Add(elementGraphicsLayer);
166                }
167
168                //定义标点样式
169                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleLineSymbol simpleMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleLineSymbol();
170                //simpleMarkerSymbol.Type = ESRI.ArcGIS.ADF.Web.Display.Symbol.MarkerSymbolType.Star;
171                simpleMarkerSymbol.Color = System.Drawing.Color.Red;
172                simpleMarkerSymbol.Width = 3;
173                simpleMarkerSymbol.Type = ESRI.ArcGIS.ADF.Web.Display.Symbol.LineType.Dash;
174                //定义标点选中样式
175                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleLineSymbol simpleSelectedMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleLineSymbol();
176                simpleSelectedMarkerSymbol.Color = System.Drawing.Color.Yellow;
177                simpleSelectedMarkerSymbol.Width = 3;
178                //simpleSelectedMarkerSymbol.Type = ESRI.ArcGIS.ADF.Web.Display.Symbol.MarkerSymbolType.Star;
179
180                ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement graphicElement = new ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement(Line, simpleMarkerSymbol, simpleSelectedMarkerSymbol);
181                //把标点添加到elementGraphicsLayer
182                elementGraphicsLayer.Add(graphicElement);
183            }
184            else if (args is PolygonEventArgs)
185            {
186                PolygonEventArgs polygonEventArgs = (PolygonEventArgs)args;
187                ESRI.ArcGIS.ADF.Web.Geometry.Ring points = new ESRI.ArcGIS.ADF.Web.Geometry.Ring();
188                for (int i = 0; i <= polygonEventArgs.Vectors.Length - 1; i++)
189                {
190                    ESRI.ArcGIS.ADF.Web.Geometry.Point point = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(polygonEventArgs.Vectors[i].X, polygonEventArgs.Vectors[i].Y, adfMap.GetTransformationParams(ESRI.ArcGIS.ADF.Web.Geometry.TransformationDirection.ToMap));
191                    points.Points.Add(point);
192                }
193                ESRI.ArcGIS.ADF.Web.Geometry.Polygon polygon = new ESRI.ArcGIS.ADF.Web.Geometry.Polygon();
194                polygon.Rings.Add(points);
195
196                //MapFunctionality
197                foreach (ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality mapFunctionality in adfMap.GetFunctionalities())
198                {
199                    //当Resource为ADFGraphicsResource,ADFGraphicsResource为GraphicsLayer， 保存在内存中用显示临时图层
200                    if (mapFunctionality.Resource.Name == "GraphicsResource")
201                    {
202                        adfGraphicsMapFunctionality = (ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapFunctionality)mapFunctionality;
203                        break;
204                    }
205                }
206                //从adfGraphicsMapFunctionality获取名为Element Graphics的DataTable
207                //ElementGraphicsLayers通常用来显示图形元素，例如显示Map中被选择的图形元素。图层并不用来存储属性，而可以存储不同的图形类型。
208                ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer elementGraphicsLayer = null;
209                foreach (System.Data.DataTable dataTable in adfGraphicsMapFunctionality.GraphicsDataSet.Tables)
210                {
211                    if (dataTable.TableName == "Element Graphics")
212                    {
213                        elementGraphicsLayer = (ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer)dataTable;
214                        break;
215                    }
216                }
217                //如果名为Element Graphics的DataTable为null，就新建Element Graphics DataTable添加到adfGraphicsMapFunctionality.GraphicsDataSet中,同时刷新Toc1显示
218                if (elementGraphicsLayer == null)
219                {
220                    elementGraphicsLayer = new ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer();
221                    elementGraphicsLayer.TableName = "Element Graphics";
222                    adfGraphicsMapFunctionality.GraphicsDataSet.Tables.Add(elementGraphicsLayer);
223                }
224
225                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol simpleMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol();
226                simpleMarkerSymbol.Color = System.Drawing.Color.Yellow;
227                simpleMarkerSymbol.FillType= ESRI.ArcGIS.ADF.Web.Display.Symbol.PolygonFillType.DiagCross;
228
229                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol simpleSelectedMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol();
230                ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement graphicElement = new ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement(polygon, simpleMarkerSymbol, simpleSelectedMarkerSymbol);
231                //把标点添加到elementGraphicsLayer
232                elementGraphicsLayer.Add(graphicElement);
233       
234            }
235            else if (args is CircleEventArgs)
236            {
237                CircleEventArgs circleEventArgs = (CircleEventArgs)args;
238                
239                ESRI.ArcGIS.ADF.Web.Geometry.PointCollection pc = new ESRI.ArcGIS.ADF.Web.Geometry.PointCollection();
240                double degree;
241                double rad  = circleEventArgs.Radius;
242                for (int i = 0; i < 359; i++)
243                { 
244                    degree = i * (Math.PI / 180);
245                    double x = circleEventArgs.CenterPoint.X + Math.Cos(degree) * rad;
246                    double y = circleEventArgs.CenterPoint.Y + Math.Sin(degree) * rad;
247                    ESRI.ArcGIS.ADF.Web.Geometry.Point nPoint = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint((int)Math.Round(x),(int)Math.Round(y), adfMap.GetTransformationParams(ESRI.ArcGIS.ADF.Web.Geometry.TransformationDirection.ToMap));
248                    pc.Add(nPoint);
249                }
250                ESRI.ArcGIS.ADF.Web.Geometry.Ring ring = new ESRI.ArcGIS.ADF.Web.Geometry.Ring();
251                ring.Points = pc;
252                ESRI.ArcGIS.ADF.Web.Geometry.RingCollection rings = new ESRI.ArcGIS.ADF.Web.Geometry.RingCollection();
253                rings.Add(ring);
254                ESRI.ArcGIS.ADF.Web.Geometry.Polygon polygon = new ESRI.ArcGIS.ADF.Web.Geometry.Polygon();
255                polygon.Rings = rings;
256
257                //MapFunctionality
258                foreach (ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality mapFunctionality in adfMap.GetFunctionalities())
259                {
260                    //当Resource为ADFGraphicsResource,ADFGraphicsResource为GraphicsLayer， 保存在内存中用显示临时图层
261                    if (mapFunctionality.Resource.Name == "GraphicsResource")
262                    {
263                        adfGraphicsMapFunctionality = (ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapFunctionality)mapFunctionality;
264                        break;
265                    }
266                }
267                //从adfGraphicsMapFunctionality获取名为Element Graphics的DataTable
268                //ElementGraphicsLayers通常用来显示图形元素，例如显示Map中被选择的图形元素。图层并不用来存储属性，而可以存储不同的图形类型。
269                ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer elementGraphicsLayer = null;
270                foreach (System.Data.DataTable dataTable in adfGraphicsMapFunctionality.GraphicsDataSet.Tables)
271                {
272                    if (dataTable.TableName == "Element Graphics")
273                    {
274                        elementGraphicsLayer = (ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer)dataTable;
275                        break;
276                    }
277                }
278                //如果名为Element Graphics的DataTable为null，就新建Element Graphics DataTable添加到adfGraphicsMapFunctionality.GraphicsDataSet中,同时刷新Toc1显示
279                if (elementGraphicsLayer == null)
280                {
281                    elementGraphicsLayer = new ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer();
282                    elementGraphicsLayer.TableName = "Element Graphics";
283                    adfGraphicsMapFunctionality.GraphicsDataSet.Tables.Add(elementGraphicsLayer);
284                }
285
286                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol simpleMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol();
287                simpleMarkerSymbol.Color = System.Drawing.Color.Yellow;
288                simpleMarkerSymbol.FillType = ESRI.ArcGIS.ADF.Web.Display.Symbol.PolygonFillType.DiagCross;
289
290                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol simpleSelectedMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol();
291                ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement graphicElement = new ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement(polygon, simpleMarkerSymbol, simpleSelectedMarkerSymbol);
292                //把标点添加到elementGraphicsLayer
293                elementGraphicsLayer.Add(graphicElement);
294
295            }
296            else if(args is RectangleEventArgs)
297            {
298                RectangleEventArgs rectargs = (RectangleEventArgs)args;
299                //矩形
300                System.Drawing.Rectangle myrect = rectargs.ScreenExtent;
301                //矩形左下定点坐标转换成地理坐标
302                ESRI.ArcGIS.ADF.Web.Geometry.Point minpnt = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(myrect.Left, myrect.Bottom, adfMap.GetTransformationParams(ESRI.ArcGIS.ADF.Web.Geometry.TransformationDirection.ToMap));
303                //矩形右上定点坐标转换成地理坐标
304                ESRI.ArcGIS.ADF.Web.Geometry.Point maxpnt = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(myrect.Right, myrect.Top, adfMap.GetTransformationParams(ESRI.ArcGIS.ADF.Web.Geometry.TransformationDirection.ToMap));
305                //
306                ESRI.ArcGIS.ADF.Web.Geometry.Envelope mappoly = new ESRI.ArcGIS.ADF.Web.Geometry.Envelope(minpnt, maxpnt);
307
308                //MapFunctionality
309                foreach (ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality mapFunctionality in adfMap.GetFunctionalities())
310                {
311                    //当Resource为ADFGraphicsResource,ADFGraphicsResource为GraphicsLayer， 保存在内存中用显示临时图层
312                    if (mapFunctionality.Resource.Name == "GraphicsResource")
313                    {
314                        adfGraphicsMapFunctionality = (ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapFunctionality)mapFunctionality;
315                        break;
316                    }
317                }
318                //从adfGraphicsMapFunctionality获取名为Element Graphics的DataTable
319                //ElementGraphicsLayers通常用来显示图形元素，例如显示Map中被选择的图形元素。图层并不用来存储属性，而可以存储不同的图形类型。
320                ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer elementGraphicsLayer = null;
321                foreach (System.Data.DataTable dataTable in adfGraphicsMapFunctionality.GraphicsDataSet.Tables)
322                {
323                    if (dataTable.TableName == "Element Graphics")
324                    {
325                        elementGraphicsLayer = (ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer)dataTable;
326                        break;
327                    }
328                }
329                //如果名为Element Graphics的DataTable为null，就新建Element Graphics DataTable添加到adfGraphicsMapFunctionality.GraphicsDataSet中,同时刷新Toc1显示
330                if (elementGraphicsLayer == null)
331                {
332                    elementGraphicsLayer = new ESRI.ArcGIS.ADF.Web.Display.Graphics.ElementGraphicsLayer();
333                    elementGraphicsLayer.TableName = "Element Graphics";
334                    adfGraphicsMapFunctionality.GraphicsDataSet.Tables.Add(elementGraphicsLayer);
335                }
336
337                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol simpleMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol();
338                simpleMarkerSymbol.Color = System.Drawing.Color.Yellow;
339                simpleMarkerSymbol.FillType = ESRI.ArcGIS.ADF.Web.Display.Symbol.PolygonFillType.DiagCross;
340
341                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol simpleSelectedMarkerSymbol = new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleFillSymbol();
342                ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement graphicElement = new ESRI.ArcGIS.ADF.Web.Display.Graphics.GraphicElement(mappoly, simpleMarkerSymbol, simpleSelectedMarkerSymbol);
343                //把标点添加到elementGraphicsLayer
344                elementGraphicsLayer.Add(graphicElement);
345
346            }
347
348            //刷新显示
349            if (adfMap.ImageBlendingMode == ImageBlendingMode.WebTier)
350            {
351                //整个地图控件刷新
352                adfMap.Refresh();
353            }
354            else
355            {
356                //只刷新部分Resource
357                adfMap.RefreshResource(adfGraphicsMapFunctionality.Resource.Name);
358            }
359        }
360
361    }