在我的应用场景中，我从SQL SERVER数据库中提取出地球的经度、纬度，用这些信息之Google地图对应位置插入插件。如果你熟悉Ajax框架，你一定知道解答的方法。于是作者写了这个控件，可以让大家更集中于服务端的功能。
Features
* Enables you to draw google map. No javascript knowledge required. Just drag and drop control on your page.
* Uses Ajax calls to retrieve server side data.
* Enables you to change pushpin postions on the fly. No need to refresh full map.
* Enables you to change pushpin icons on the fly.
* Optimized to give you best performance. i.e., only those pushpin data will be retrieved from server that are changed.