ArcEngine判断要素（feature）是否为multipart feature及分解（炸开）代码

来源：互联网发布：c语言外部接口编辑：程序博客网时间：2024/04/29 07:37
#region 校验合法性            ArrayList pFeatureArray = null;            pFeatureArray = Application.Editor.FeatureSelection();            int count=pFeatureArray.Count;            if (count<1)            {                MessageBox.Show("最少必须选择1个要素才能进行要素分解！", "提示");                return;            }#endregion   try            {                //启动编辑操作                Application.Editor.StartOperation();                #region 对选中的要素进行多部件测试及分解                int multipartcount = 0;                for (int i = 0; i < count; i++)                {                    IFeature pFeature = pFeatureArray as IFeature;                    if (pFeature.ShapeCopy.IsEmpty) continue;                    IGeometry pGeometry = pFeature.ShapeCopy;                    IGeometryCollection pGeocoll = pGeometry as IGeometryCollection;                    int geomcount = pGeocoll.GeometryCount;                    if (geomcount > 1)                    {                        multipartcount++;                        for (int k = 1; k < geomcount; k++)                        {                            IFeature newFeaturte = (pFeature.Class as IFeatureClass).CreateFeature();                            IFeatureEdit pFeatureEdit = pFeature as IFeatureEdit;                            pFeatureEdit.SplitAttributes(newFeaturte);                            IGeometry newGeom = pGeocoll.get_Geometry(k);                            if (pFeature.ShapeCopy.GeometryType == esriGeometryType.esriGeometryPolygon)                                newGeom=GeometryHelper.ConstructPolygon(newGeom);                            else                                newGeom = GeometryHelper.ConstructPolyline(newGeom);                            newGeom.SpatialReference = pFeature.ShapeCopy.SpatialReference;                            newFeaturte.Shape = newGeom;                            newFeaturte.Store();                        }                        IGeometry newGeom2 = pGeocoll.get_Geometry(0);                        if (pFeature.ShapeCopy.GeometryType == esriGeometryType.esriGeometryPolygon)                            newGeom2 = GeometryHelper.ConstructPolygon(newGeom2);                        else                            newGeom2 = GeometryHelper.ConstructPolyline(newGeom2);                        newGeom2.SpatialReference = pFeature.ShapeCopy.SpatialReference;                        pFeature.Shape = newGeom2;                        pFeature.Store();                        Application.Editor.StopOperation("分解多部件要素");                    }                    else                    {                        continue;                    }                }                if (multipartcount == 0)                {                    MessageBox.Show("未选择多部件要素！", "分解要素");                    return;                }                                                #endregion            }            catch (Exception ex)            {                Application.Editor.AbortOperation();                MessageHelper.WriteLog("分解多部件要素", ex);            }            finally            {                Application.ActiveView.Refresh();                FlashFeatures();            }