Trying to extend flex datagrid to add an "add new row" row

I am trying to extend the fl开发者_运维百科ex datagrid component so that I can have an "add new row" row like MS Access but I can't get it to work. I have tried a few different methods but I can't get anything to actually work.

By extend I really mean alter the Adobe code as some of the private vars I needed to do something else but I should be able to merge extend code with Adobe's.

Thanks for your help.

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You have to make the datagrid editable and then add a new object (or whatever you are using) with empty data to the datagrid's data provider.

Here is an example I have created.