The Research And Application Of GIS Portal

In recent years,with the pace of GIS being applied to every works of life more widely and deeply,the needs of GeoSpatial service in our society is more and more common.Through issusing map resources in Internet,a lot of precious spatial data can be shared and reused.Every walk of life begin thinking much of GIS and now making a good use of it,and there is an appeal for the open and standard GIS environment.Not only the GIS need interoperation,but also the other systems need to interoperate with GIS.Regarding to the actuality of our GIS industry,there are many "information islands"which are opposite to the appeal of open and cooperation.To get over the contradiction,the effective way is to resolve GIS interoperation problem.AS for now,many countries have built SDI and gained experience.In this article,Referring to Success experience of other countries and applying some advanced techniques,put forward a new way of service -oriented architectured portal of spatial information,which is derived from nowadays WebGIS technology.A new GIS service model is developed to support georesource sharing.It is expected that this model will contribute to the development of making GIS functions accessible to network user on request base.On the basis of analysing of the of merits and dismerits existing developed methods,this article describes the packaging of the create of GIS function with .NET,and implements the WebGIS development based on controller by using ASP.NET and a general GIS Controller.