应用MapXtreme2004开发GIS代码(C#) 搜索TAB表中的元素

应用MapXtreme2004开发GIS代码(C#) 搜索TAB表中的元素

 

注：本贴跟上一个帖子“MapXtreme2004代码 读取TAB表中的元素”有直接关联，请先看那篇BLOG。http://blog.youkuaiyun.com/arui319/archive/2005/02/26/302859.aspx

 

private void FindYuansu()

{

     Find find = null;

     try

     {

         MapInfo.Mapping.Map map = null;

         //获取地图

         if (MapInfo.Engine.Session.Current.MapFactory.Count == 0 ||

              (map = MapInfo.Engine.Session.Current.MapFactory[0]) == null)

         {

              return;

         }

         //开始搜索

         MapInfo.Mapping.FeatureLayer findLayer = (MapInfo.Mapping.FeatureLayer) map.Layers[_findLayerName];

         find = new Find(findLayer.Table, findLayer.Table.TableInfo.Columns[_findColumnName]);

         FindResult result = find.Search(DropDownList1.SelectedItem.Text);

         if (result.ExactMatch)

         {

              //重新设置地图

              map.Center = new DPoint(result.FoundPoint.X, result.FoundPoint.Y);

              MapInfo.Geometry.Distance d = new MapInfo.Geometry.Distance(30, map.Zoom.Unit);

              map.Zoom = d;

         }

         else

         {

              Response.Write("没有搜索到！");

         }

         find.Dispose();

     }

     catch (Exception)

     {

         if (find != null) find.Dispose();

     }

}