如何在没有刷新页面的情况下重新加载asp.net mvc3中的下拉列表值

I'm developing a MVC3 application which interacts with a db. I'm using a form to create an entity and one of the attributes is dependent on another table. To ensure referential integrity, I am populating a drop down list to restrict the user as follows:I'm developing a MVC3 application which interac