Abstract: Based on analysis of the deficiency of the current WebGIS field, this article studies the implementation model and the technological features of .Net. In light of the idea of multi-tier and component, a new architecture, .Net-based WebGIS system is constructed. The new system takes full advantages of .Net technology and solves such problems in the current system as concurrent deficiencies, inefficient compatibility, and complicated development and distribution. The new system is implemented in the .Net environment.

Key words: WebGIS, .Net, COM+

摘要： 分析了现有WebGIS的不足，论述了基于.NET技术的实现模型和技术特点，并根据多层结构及组件化的思想，构建了一种新的架构——基于.NET框架的WebGIS系统，该系统利用.NET的技术特点，解决了现有系统并发能力不强、兼容性不够、开发及部署复杂等问题，并且在.NET环境下进行了实现。

关键词: WebGIS, .NET, COM+