if (e.KeyChar == (char)13)
{
int col = grdIdeal.CurrentCell.ColumnIndex;
int row = grdIdeal.CurrentCell.RowIndex;
int nRows = grdIdeal.Rows.Count - 1;
int nCol = grdIdeal.Columns.Count - 1;
if (nCol == col && nRows == row)
grdIdeal.CurrentCell = grdIdeal[0, 0];
else if (nRows == row)
grdIdeal.CurrentCell = grdIdeal[col + 1, 0];
else
grdIdeal.CurrentCell = grdIdeal[col, row + 1];
e.Handled = true;
}