Question

求实现空间查询功能的C#代码，是关于ArcEngine的。

在VS2005软件下运行的。急啊。要弹出窗体的。希望能把所需控件描述清楚。。感谢啊。。

Answer 1

IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();//打开shapefile工作空间
openFileDialog1.Filter = ("shapefile文件(*.shp)|*.shp");//文件过滤
openFileDialog1.InitialDirectory=@"C:\Program Files\ARCGIS\GIS-Data";//默认路径吧
openFileDialog1.Multiselect = false;//只能单选
DialogResult pDialogResult = openFileDialog1.ShowDialog();
if (pDialogResult != DialogResult.OK)
return;//如果没点击确认 ，返回
string pPath = openFileDialog1.FileName;//获得文件的路径
string pFloder = Path.GetDirectoryName(pPath);//得到文件所在的文件夹位置
string pFileName = Path.GetFileName(pPath);//得到文件名

IWorkspace pWorkspace = pWorkspaceFactory.OpenFromFile(pFloder, 0);//打开工作空间
IFeatureWorkspace pFeatureWokkspace = pWorkspace as IFeatureWorkspace;//转换工作空间为要素工作空间
IFeatureClass pFC = pFeatureWokkspace.OpenFeatureClass(pFileName);//打开要素类
IFeatureLayer pFLayer = new FeatureLayerClass();
pFLayer.FeatureClass = pFC;//设置图层的featureclass为上面打开的文件
pFLayer.Name = pFC.AliasName;//设置图层的名称
ILayer pLayer = pFLayer as ILayer;//转换featurelayer为layer
IMap pMap = axMapControl1.Map;
pMap.AddLayer(pLayer);//添加图层
axMapControl1.ActiveView.Refresh();//刷新