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how connect to barcoder in c#?
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Barcode printers are like normal printers and are used in a normal way.

Barcode scanners are connected to the computer usually via a USB port and act as a keyboard, when you press the button on the device they scan the barcode and generate keystrokes which get inserted in the currently focused control in your UI.
 
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Barcode scanners do not need to be handled by any special code in your windows application. You just need to handle the newline character that it automatically sends after every input and process it.

If you are using bluetooth barcode scanner, you need to listen some socket and process data when received.
 
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