ArcGIS engine二次开发的小程序，功能：添加shp、lyr图层，删除图层，移动图层，更改图例符号，属性查询，鹰眼，C#。-ArcGIS engine secondary development of small procedures, functions: add shp, lyr layer, delete layer, move layers, change the legend symbol, attribute query, Hawkeye, C#.