Need help for an POS inventory system application

Question

I hope you are doing great :) Actually I am working on an POS inventory application which is underdevelopment in Windows Form Application C#. I am done with the insert update delete and search principles of products from the inventory database(MS ACCESS) using barcode. I need your help in the phase where the computer operator will scan a barcode from the product and the product will be displayed in the listbox one by one as the products got scanned. I know how to retrieve the data from the database(MS ACCESS). I have tried different things but didn't find any luck to get through it. The issue I am facing is on POS screen which is when I scan a product and read the barcode in the textbox it just scans one n.o and call the eventMethod. The eventMethod I used was textBox_TextChanges(-- --). I also tried to do it using Thread.Sleep() property in such a way that when one n.o is copied in the textbox thread sleeps for 1-2secs as a result whole barcode could be copied but nothing gained. Is there any simple way that just scans the barcode and automatically it add the details of the item in the listbox? Or any other solution you people have in your mind ??? I will be very grateful if someone can let me take through this issue. Thank You!!!

Amit Gupta · Answer

Hey Most of the barcode scanner are of keyboard type it just scan the code and paste it onto your textbox followed by the enter key. So don't use any thread or text changed event simply use textbox's lost focus event. Steps: 1. Take a button named Add 2. Goto form and set the AcceptButton to btnAdd 3. Write your code at the code's textbox lost focus event to fetch the remaining details from the database/datatable 3. Just focus on the code's textbox when scanning 4. Write your code on the add button to add the details to the gridview 5. All done Good Luck