Flex 4, Air 2, and others

From last night, I started writing a Flex program. Here is what it does:

1. open a .xls file and show it in datagrid.

2. search by column, type as change.

3. Open the changed datagrid in new .xls file.

It's pretty neat, would be very useful to process a large .xsl file.

But then I found it's not that useful because Excel could do basically everything it does. Kind of frustrated a little bit, but then I realize that it's not that bad, after I jsut re-picked up what I left about a year ago. After all, I start using Flash Builder 4, Flex 4 API, AIR 2 API, refresh some of my knowledge on Flex, like layout, HGroup(HBox), VGroup (VBox), ArrayCollection, Column list, ComboBox, Filter function....and also how to release a project.

So, it's good.