The old data gets deleted when I add a new row to the "datatable"

Dear Friends

I have created a datatable then I bind the datatable with dataset
and
after binding to datatable i want to insert multiple rows to the same datatable using the text box values.
Is it possible to do this. If yes Please help me to achieve this task



Regards
Sara

i've done something similar,

1. when the user clicks add a dataset it created from the datatable

2. add any new rows to the dataset

3. re-bind dataset to the datatable