ArcgisEngine实现对地图的放大、缩小和平移

ArcgisEngine实现对地图的放大、缩小和平移:

?个人觉得是平移，不过网上的都是漫游，通俗的说就是把一个地图对象从一边拉到另一边而已。就看人说话吧.

?具体实现:

一、引入命名空间

? ?using ESRI.ArcGIS.Geometry;

? ?using ESRI.ArcGIS.Controls;

二、代码实现.

??

int flag = 0;
  private void 放大ToolStripMenuItem_Click(object sender, EventArgs e){
  axMapControl1.MousePointer = esriControlsMousePointer.esriPointerPageZoomIn;
   flag = 1;
        }

  private void 缩小ToolStripMenuItem_Click(object sender, EventArgs e){
   axMapControl1.MousePointer = esriControlsMousePointer.esriPointerPageZoomOut;
   flag = 2;
        
        }

  private void 平移ToolStripMenuItem_Click(object sender, EventArgs e){
   axMapControl1.MousePointer = esriControlsMousePointer.esriPointerPan;
   flag = 3;
     }

   private void axMapControl1_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e){
   IEnvelope ipenv= axMapControl1.TrackRectangle();
      if(flag==1){

        axMapControl1.Extent = ipenv;
      }else if(flag==2){

           ipenv = axMapControl1.Extent;
           ipenv.Expand(2, 2, true);
           axMapControl1.Extent = ipenv;
            }else if(flag==3){

               ipenv= axMapControl1.Extent ;
                axMapControl1.Pan();
            }
           
        }
    }

?

?三、补充:

? ?在AE中，在地图控件中添加.jpg，.bmp类型图层文件时，调用下面方法会简单很多的.

? ?

IRasterLayer rasterLayer = new RasterLayer();
 rasterLayer.CreateFromFilePath(str);
 axMapControl1.AddLayer(rasterLayer, 0);

?其中，str是文件路径.

?

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