problem populating gridView on dropDownList

[Guest]

I have two dropDownLists A and B outside a gridView.

A selection made in ddlA causes ddlB to be populated with data from the
database. The gridView is populated with data according to a selection in
ddlB.

ddlA --> ddlB --> gridView

When a user selects an item in ddlA, I want
(a) the ddlB to be populated automatically
(b) the gridView to be populated automatically based on the first item in
ddlB.

I have two problems:
1. the (b) part doesn't work;
2. if ddlB contains only one item, the item cannot be selected even by
clicking on it.

Thank you for your suggestions.

 

[Vlad Iliescu]

You could try to also populate the gridview after ddlB is DataBound,
based on its SelectedItem (if it has one, that is).