question on Insert a New Data into .sdf file,need help!!

Hi,
I have questions on insert a new data, i wrote the codes as below and i run it. It's no problem on the codes part, but when i open my order table from order.sdf file, it is empty record.
do i miss some codes or do i write it wrong why my order table is empty record since i added "123" for it does anyone know about this

private void addbutton1_Click(object sender, EventArgs e)
{
ABCDBDataSetTableAdapters.orderTableAdapter ota = new this.ABCDBDataSetTableAdapters.orderTableAdapter();
ABCDBDataSet.orderRow newOrderRow = aBCDBDataSet.order.NewOrderRow();
newOrderRow.Items = "123";
aBCDBDataSet.order.Rows.Add(newOrderRow);
ota.Update(aBCDBDataSet.order);
}



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question on Insert a New Data into .sdf file,need help!!