使用ajax发布到部分视图表单的服务器

I am new at using ajax, I have to add the form data onto a post so that it can be added to the server. but the tricky part is that the form data is a partial view on a dialog box. i would like to know how i would be able to use ajax in order to get a hold of this data so that it can be put back on to a database. I am new at using ajax, I have to add the form