suoermap的object.net循环遍历属性表，从数据库取数据进行更新属性字段值

/// </summary>
        /// <param name="sName">图层名</param>
        /// <param name="stationID">测站编码</param>
        /// <param name="evalue">值</param>
        public static void QueryLayerAttribute(string sName,string stationID,double evalue)
        {
            if (null!=sName)
            {
                Layer layer = m_mapControl.Map.Layers[sName];//获取图层
                if(null!=layer)
                {
                    DatasetVector dataset = layer.Dataset as DatasetVector;
                    Recordset recordset = dataset.GetRecordset(false, CursorType.Dynamic);
                    recordset.MoveFirst();
                    if (null != dataset)
                    {
                        for (int i = 0; i < recordset.RecordCount; i++)//遍历属性表
                        {
                            string station = recordset.GetFieldValue("stationID").ToString();

                            if (stationID == station)
                            {
                                recordset.Edit();
                                recordset.SetFieldValue("eValue", evalue);
                                recordset.Update();
                                return;
                            }
                            recordset.MoveNext();
                        }

                    }
                }
            }
            m_mapControl.Refresh();
        }