Question

Can you help my problem?

I have 2 tables : product (as parent) and sales (as a child).

product table consists of:
product_id | product_name | product_price |
1 | book | $5 |

sales table consist of:
transaction_id | product_id | quantity | total_price |
A001 | 1 | 10 | $50 |

1. product_id at the product table is pK for product table.
2. transaction_id at the sales table is pK for sales table .
3. product_id at the sales table as fK, which a reference to the product_id of product table

All my tables are stored in the dataset. How do I get the data from these datasets can I view on the DataGridView with a different layout formats, as follows.

transaction_id | product_name | product_price | quantity | total_price |
A001 | book | $5 | 10 | $50 |

Thanks & Best Regards,

YDA

Answer 1

Can you write your query to populate your dataset in the format you want? If so, I think you can just databind the resulting datatable to the DataGridView and get what you want. So your query would be something like:

"SELECT transaction_id, product_name, product_price, quantity, total_price, A001, book, $5, 10, $50 from product join sales on product.productid = sales.productid"

Of course, you would replace $5 and so on with the actual column names. Use that query to populate a dataset, then on your form.

DataGridView.DataSource = DataSet.Tables("MyJoinedDataTable")

Where “MyJoinedDataTable” is the name of the table that you populated in the dataset.