Datagrid and Drop Down Lists

[huvandhuma]

Hi..

I am having a problem with understanding how to catch the selected index changed event of a drop down list when placed inside a datagrid..

I have two drop down lists inside a datagrid.. i.e. DDLA and DDLB.. I have set DDLA on Autopost back and I want DDLB to be populated from the database once DDLA's selected index changes..

Can anybody give any ideas on how to get this done.. Thanks