i try to learn ado.net so i start with an article how to build databaseusing ado+access and vb.net and think this article is compatible with visual studio 2005not2010 which i have so some error i face like
Me.BindingContext(DataSet1, "table1").Position = 0
i tray toread the first record from access data base
any one can guide me to learn new version of ado.net with ms access
I'm not designing a purchase order system per se, but it is the closest thing to what I'm actually doing so that's why my question/concern involve it. In a "minimal" PO system, you have the following tables:
When an order is first created (e.g., #123), product descriptions and prices are pulled from the Products table. That order is marked as paid. A few months go by and some of the products in the Products table get updated with new prices. Now what happens when I look at order #123 and its details? The price of that order will no longer match the sum of its individual products. Is that common? Am I looking at this from the wrong angle?
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Show me a community that obeys the Ten Commandments and I'll show you a less crowded prison system." - Anonymous
When a new price is added, the FromDate of the new record and the ToDate of the previous price are set as Now.
You find the current price by WHERE ToDate IS NULL
To find a price for an order you can use WHERE orderdate BETWEEN FromDate and ISNULL(ToDate,Now)
You may add NextPrice and PreviousPrice fields if you need to do a lot of lookups.
(Specific syntax depends on the particular database in use.)
jschell has the right of it, put all the details required to calc the value on the detail record. This may also include any discount/adjustment values. Your invoice report should only pull the descriptors from the product and customer tables
Never underestimate the power of human stupidity
I am learning Asp.net with C# and Sql
server. I came across with a huge fixed width text file of 1780 columns. I have to import this file in sql server table. I will appreciate if you can help in this.
i want to show results something like this...
First row contain the opening balance calculated by this i.e: Sum(Balance)where datefield <= DateByUser
and next rows shows the records between dates given by user & evaluate balance on each row
output should like this..
. . . .
. . . .