Question

I’m entering sales entries using a TabaleAdapter and a dataGridView. When a row is about to be saved, i want to check the StockBalance of the selected product and verify that current stock for selected product is not less than amount being sold. if its less i want to cancel the sale, so how can get the values that are about to be inserted or updated by the TableAdapter from the example code below?

 private void dataGridView1_RowValidated(object sender, DataGridViewCellEventArgs e)
    {

            this.Validate();
            this.itemSalesBindingSource.EndEdit();
            this.itemSalesTableAdapter.Update(this.businessDataDataSet);

    }

Answer 1

Try using this command before calling Update(...):

DataSet changesDataSet = businessDataDataSet.GetChanges();

Now you should have a DataSet object that shows what is going to be transmitted to the database.