Topic: How to calculate sum of same data (inventory app)?
Hello guys,
I need to make simple warehouse/inventory program, and the data grid needs to show stock.
Like if i have 5 pens in inventory, it needs to show one line in data grid and total of the pens.
When i add 5 more pens it needs to update automaticaly and show new total of 10 pens.
How can i achive this?
Thank you