Datagridview control help to retrive data into the datatable or dataset

Hi,

I have created a application which will load the data from the database into the dataset, then i am binding the datatable to the datagridview. After binding i am creating two columns into the grid,one that has the combobox type and other that has the checkbox type.

User will select respective data from the combobox, and if applicable, he will check the checkbox column.

Now i want this completely filled datagridview control data into the dataset or datatable, but i am not able to achive it. I am getting only those columns which i have initially binded to the datagridview control.

Please help me.

Thanking you,

Prashant