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();

}

}