//删除SDE图层

        public static bool DeleteSDELayer(ESRI.ArcGIS.Geodatabase.IWorkspace m_pWorkspace, string SDEDSname )

        {

            try

            {

                ESRI.ArcGIS.Geodatabase.IEnumDatasetName pEnumDsName = m_pWorkspace.get_DatasetNames(ESRI.ArcGIS.Geodatabase.esriDatasetType.esriDTFeatureClass);

                pEnumDsName.Reset();

                ESRI.ArcGIS.Geodatabase.IDatasetName pSDEDSname = pEnumDsName.Next();

                while (pSDEDSname != null)

                {

                    

                        if (pSDEDSname.Name.ToUpper().EndsWith(SDEDSname.ToUpper()))

                        {

                            break;

                        }

                    }

                    pSDEDSname = pEnumDsName.Next();

                }

                if (pSDEDSname != null)

                {

                    ESRI.ArcGIS.Geodatabase.IFeatureWorkspace pFWS = m_pWorkspace as ESRI.ArcGIS.Geodatabase.IFeatureWorkspace;

                    ESRI.ArcGIS.Geodatabase.IFeatureWorkspaceManage pFWSM;

                    pFWSM = (ESRI.ArcGIS.Geodatabase.IFeatureWorkspaceManage)pFWS;

                    pFWSM.DeleteByName(pSDEDSname);

                }

            }

            catch (Exception ex)

            {

                return false;

            }

            return true;

        }