.NET环境下基于MapObjects组件的WebGIS应用研究

WebGIS Application and Research Based on MapObjects Component in .NET Environment

为了在Web环境中重用现有的基于MapObjects组件的代码资源,以IIS托管MapObjects应用的形式,提出了一种新的WebGIS解决方案:在.NET环境下基于MapObjects2.2采用C#语言进行开发,由IIS托管的服务器端嵌入MapObjects组件以提供GIS功能服务,交互页面部分采用ASP.NET实现,页面元素与代码分离,结构清晰,安全性高;客户端无需下载、安装插件,借助通用浏览器即可访问WebGIS服务,提高了其可用性。并以此方案作为系统框架,基于该机制实现了网络版兰州城市交通电子地图,验证了该方案的可行性。

In order to reuse the existing code resources based on MapObjects component in Web environment,herein a kind of solution for WebGIS is proposed,which was implemented by using Internet Information Services to manage MapObjects application.The system based on MapObjects2.2 GIS component was built by using C# in.NET environment.The server managed by IIS and embedded with Mapobjects component can supply GIS function;Meanwhile,ASP.NET was used to build web pages responding to clients,for it allows us to separate user interface from code files.Besides,web pages being built by ASP.NET have pellucid architecture and better security.In addition,users don＇t have to download as well as install plug-ins,they can enjoy WebGIS services by using general browser,which increased the using frequency.As a validation for feasibility and high efficiency,a web version of Lanzhou city＇s traffic digital map was implemented by using the solution as the frame.