How to update the dropdownlist without refreshing the page?

Question

I am working in MVC. I am trying to update the dropdownlist which is in a table without refreshing the browser. The problem is all the data which has textbox in that row gets updated as expected, but the dropdownlist doesn't get updated. For that I have to manually refresh the page after which it gets updated.

 

Any suggestions?

 

You can post any helpful links if possible.

 

 

Thanks in advance.