当我使用$ .getJSON方法时，ASP.NET MVC局部视图不会调用我的Action

I am building a Website for document management system on ASP.NET MVC3, in a page I am using a Partial view, the Partial View represents a simple Form.There is a drop down list and when one option is selected the ID of selected option should go to action Result. To do that i used I am building a Website for document management