C#AE开发对图层要素进行叠置分析时，老是报错，异常来自 HRESULT:0x80040258
代码如下：
public void Clip(AxMapControl m_map)
{try{//分析层ILayer pLayer = m_map.get_Layer(0);IFeatureLayer pInputFeatLayer = pLayer as IFeatureLayer;ITable pInputTable = pLayer as ITable;IFeatureClass pInputFeatClass = pInputFeatLayer.FeatureClass;//叠加表pLayer = m_map.get_Layer(1);ITable pOverlayTable = pLayer as ITable;//叠加分析表IFeatureClassName pFeatClassName = new FeatureClassNameClass();pFeatClassName.FeatureType = esriFeatureType.esriFTSimple;pFeatClassName.ShapeFieldName = "shape";pFeatClassName.ShapeType = pInputFeatClass.ShapeType;//工作空间名称IWorkspaceName pNewWSName = new WorkspaceNameClass();pNewWSName.WorkspaceFactoryProgID = "esriDataSourcesFile.ShapefileWorkspaceFactory";pNewWSName.PathName = @"D:\a";//数据集名称IDatasetName pDatasetName = pFeatClassName as IDatasetName;pDatasetName.Name = "intersectshp";pDatasetName.WorkspaceName = pNewWSName;//几何处理IBasicGeoprocessor pBGP = new BasicGeoprocessorClass();pBGP.SpatialReference = m_map.SpatialReference;IFeatureClass pOutputFeatClass = pBGP.Intersect(pInputTable, false, pOverlayTable, false, 0, pFeatClassName);//输出要素层设置IFeatureLayer pOutputFeatLayer = new FeatureLayerClass();pOutputFeatLayer.FeatureClass = pOutputFeatClass;pOutputFeatLayer.Name = pOutputFeatClass.AliasName;//添加图层m_map.AddLayer((ILayer)pOutputFeatLayer, 0);m_map.Update();}catch (Exception ex){LogHelper.Error(ex.Message);}
}调试每次到IFeatureClass pOutputFeatClass = pBGP.Intersect(pInputTable, false, pOverlayTable, false, 0, pFeatClassName);就报错，也不知道为什么报错，调了好几个地方，后面发现，是路径的问题，设置工作空间路径pNewWSName.PathName = @"D:\a";这一句，我原本的路径是不存在的，本以为它会新建，事实上，并没有.把这里改成已有文件夹路径，上面的几何处理语句就可以通过了。