The Design And Realize Of GIS System Based On Comgis

With the application deeply, application technique of GIS has developed greatly, the research of ComGIS has became a hotspot. ComGIS is a new generation GIS which accommodate the tide of the component software. Studying how to use the technique of ComGIS to develop the GIS application software has got the important meaning to developing the industry of GIS in china and to promoting the popularization of GIS.The paper expatiate on the design concept and process of the GIS system of "san tai he yi",practising the development method basede on MapX component and C#.NET.The GIS system of DEQIN develop with C sharp language based on .NET frame in Windows2000 OS;using Oracle as its DataBase with certain mechanism to asure the integrality, security, coherence of the data.The GIS system of DEQIN realize the main map interface, command counterplan interface, map layer control interface and map control function, map query, eye view function, GPS tracking and position, distance measure and area measure function, map output function, DataBase manager function etc., expatiating on the key technique in details. And test the system in the end,obtaining the purpose...