how to get textbox value inside the gridview

Hi frnds,
   am using gridview with textbox.i want to get textbox value.

void objitemcodeTxt_KeyPress(object sender, KeyPressEventArgs e) { int dgvColIndex = dgvItemdetail.CurrentCell.ColumnIndex; int dgvRowIndex = dgvItemdetail.CurrentCell.RowIndex; if (dgvColIndex == 1) { // checks the item name of selected value is not equal to null if (((TextBox)sender).Text != null) { objBgmDTO.ItemID = ((TextBox)sender).Text.ToString();
}
}