封装了Extjs，在asp.net下拥有了和ExtJS一样的用户界面体验，改变了Extjs但用js开发的模式，方便的了asp.net开发人员-Encapsulates the Extjs, in asp.net and ExtJS under have the same user interface experience, changing the Extjs but the model developed with the js and convenient in asp.net develo