c#+arcengine 栅格转面

  ///

                string pologyPath = System.IO.Path.GetDirectoryName(rasterPath) + "\" + System.IO.Path.GetFileNameWithoutExtension(rasterPath) + "\" + System.IO.Path.GetFileNameWithoutExtension(rasterPath) + ".shp";
                if (!Directory.Exists(System.IO.Path.GetDirectoryName(pologyPath)))
                    Directory.CreateDirectory(System.IO.Path.GetDirectoryName(pologyPath));

                //创建gp⼯具
                Geoprocessor pGeoprocessor = new Geoprocessor();
                pGeoprocessor.OverwriteOutput = true;

                RasterToPolygon tRTP = new RasterToPolygon();
                tRTP.in_raster = rasterPath;
                tRTP.out_polygon_features = pologyPath;
                //tRTP.raster_field = "VALUE";
                //tRTP.simplify = "SIMPLIFY";

                var tGeoResult = (IGeoProcessorResult)pGeoprocessor.Execute(tRTP, null);
                if (tGeoResult.Status == ESRI.ArcGIS.esriSystem.esriJobStatus.esriJobSucceeded)
                {
                    return pologyPath;

                }
                return null;
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
                return null;
            }

        }