Water Supply Pipe-network Management System Based On COM/ActiveX

The spread of Internet provide a new opportunity for GIS, WebGIS has been A hotspot of GIS technology. Nowadays, there are many methods for WebGIS development. How to use suitable methods to build the Internet-based GIS application is the starting Point of this paper.Firstly, the paper introduce the concept, application and development of GIS And then analyse the structure, specialty and implement-method of Web GIS in detail, furthmore conclude excellence and disadvantage of five technology and point out direction for system development, and then, the paper discuss WebGIS scheme thatget extensive application now, and introduce several familiar WebGIS product in market.At present, the WebGIS based on COM/ActiveX has been applied widely because this method is steady-going and easy to use. Take the example of MapXtreme, the product of Maplnfo Inc, the paper detailedly explain exploitation method of GIS on the exploitation platform of MapXtreme. "Water supply pipe-network management system based on WebGIS" is the principal content.the article emphatically expatiate system project, exploitation platform and design of application program about the system. Finaly, the paper refer function design of project and how to realize, then show some principle about vital function. In conclusion indicate development direction for "Pipe-network Management System based on WebGIS" .