Grdiview, 2 dropdownlist, how to change values in Dropdownlist with Ajax

 
Hi, 


first of all, I'm new to
AJAX and searched a lot about my topic, but couldn't find anything. 


Let?s describe my
situation: I'm writing a Web application to manage the work schedule of the
staff. Basically I have a table filled with date, project, subproject, time and
additional description.

All the data is stored in a mysql database. To show the data I use a Gridview,
in this GridView I have two depended dorpdownlists (DDL). If the value of the first
DDL changes the content of the second drop dwonlist need to be updated. (Each
project has its own subprojects). The problem with this is, that every row has
this independent dropdownlist. So if the changes will be made in one row only
this one row needs to be updated.

Actually the whole page will be reloaded after changing the project. The amount
of rows in the GridView varies.

So my  question is, if it is p ...