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I'm sorry, here is the information in english.
Title: How to prevent duplicate records in listview Vb.NET 2010
I want to ask you for some tips if it is possible if not that is understandable
I’m creating an application to sell products in a supermarket.
What I want to do is the following:
It is a form for sales, from a textbox I input the product code and then the product information is displayed in the listview with the code, product name, price, quantity, discount, subtotal and tax. When I add the same product, it is added in another line but what I want to do is instead of adding another line with the same product, I want to increase the quantity automatically and not add it to another line unless it is a different product, I have been trying for a long time and I have not achieved it, if you can help me I would be very grateful.
I’m sorry if couldn’t post my code, I’m traveling right now.
Best regards,
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Please post your question in english