修改本地地图的空间属性

在开发个人版的地图程序中,经常有需要修改本地地图的空间,使之与数据库记录对应上.

在本地库可以不需要创建工作空间,可以直接修改其空间属性,不说了,贴上代码自己看吧

 

  /// <summary>
        /// 修改空间属性字段
        /// </summary>
        /// <param name="ManagerId"></param>
        /// <param name="ManagerName"></param>
        /// <param name="RoadId"></param>
        /// <param name="StartStake"></param>
        private void UpdateFields(string ManagerId, string ManagerName, string RoadId, string StartStake)
        {
             //需要先判断要修改的值不能为空,否则修改后记录对应不上地图
            if (!string.IsNullOrEmpty(ManagerId) && !string.IsNullOrEmpty(ManagerName))
            {
                //遍历所有的图层
                for (int i = 0; i < axMapControl.LayerCount; i++)
                {
                    //定义一个要素图层
                    IFeatureLayer pLayer = null;
                    //定义一个要素类
                    IFeatureClass iFeatureClass = null;
                    try
                    {
                        //获得图层
                        pLayer = (IFeatureLayer)axMapControl.get_Layer(i);
                        iFeatureClass = pLayer.FeatureClass;
                        //创建一个游标
                        IFeatureCursor pCursor;
                        //创建查询条件
                        IQueryFilter pFilter = new QueryFilterClass();
                        pFilter.WhereClause = " LXBM = '" + RoadId.Trim() + "'" + "  AND QDZH='" + StartStake.Trim() + "'";
                        pCursor = iFeatureClass.Search(pFilter, false);
                        IFeature pFeature;
                        //获得查询结果并 赋值
                        pFeature = pCursor.NextFeature();
                        if (pFeature != null)
                        {
                            pFeature.set_Value(5, ManagerId);
                            pFeature.set_Value(6, ManagerName);
                            pFeature.Store();
                            pFeature = pCursor.NextFeature();
                        }
                    }
                    catch
                    {
                    }
                }
            }
        }