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

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

#region 校验合法性

ArrayList pFeatureArray = null;

pFeatureArray = Application.Editor.FeatureSelection();

int count=pFeatureArray.Count;

if (count<)

{

    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 = ;

    for (int i = ; 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 > )

        {

            multipartcount++;

            for (int k = ; 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();

            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 == )

    {

        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();

}