How to return dataset from grid

Hi...
This Active widgets grid working fine for me. I am giving input as dataset to grid from vb.net and sql server database. Now after changing data in grid i need to access complete data of grid to calculate. For that to access data i need same dataset that i gave input to grid. or you people suggest me to any other solution to access grid data. Waiting for you people response.

I think grid doesnt return any thing