I need advise on how to solve this scenario. I am not sure whether I should use any Report Application such as Crystal Report or I can just simply use datagridview.
My scenario:
In a new form, a table will show a least 3 columns.
First, ItemID
2nd, Total Quantity Sold for the Current Month
3rd, Total Quantity Sold: Last month
Expand|Select|Wrap|Line Numbers
- ItemID Current (Nov) October
- ABA1 100 85
- ABB1 80 90
Right now, I do not have any problems building SQL_String for calculating the Total Qty Sold for the Current month and display it via DataGridView. But I am not sure how to additional column that calculate the Total for the past few month.
Please advise. And thanks in advance.