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Creating a Barcode in Excel. 1  Suppose that you want to create code 39 barcode for cell A1. 2  In the cell that holds the barcode, enter formula =Code39(A1).  Text string *123457* should appear once you hit Enter.
I am trying to select data from database using textbox and display it on a new row of gridview. The textbox will be inputted using barcode scanner. I only need to scan the barcode and then search the data in database and add it on the new row of gridview. It will execute using ontextchange event.Here is my code so far: The above code, able to add new row but can't take the data from database. When I execute it, and scanned a barcode, it doesn't display the data from database, it add text 'Barcode' on dr(0) and text 'name' on dr(1) instead.So, I think the sql for taking the data from database isn't working.t will execute using ontextchange event. Here is my code so far: The above code, able to add new row but can't take the data from database. When I execute it, and scanned a barcode, it doesn't display the data from database, it add text 'Barcode' on dr(0) and text 'name' on dr(1) instead.