Why I am getting wriong input (COM)?

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Hello Guys,

I am tring to read the information from PrehKeyTec Reader.

In the application that I am reading the input information is using the SerialPort Class.
The problem comes when I read the card and the output come in garbage input :

??x???????p'p\gyG:Ox?gvozovgvoz?~G????{??WrOz_gqzGu????O|??OzpG}\_os??O~p^\gv?q

Where seems to be the problem ?

Posted 16-Apr-14 20:43pm

Zhivko Kabaivanov

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lukeer 17-Apr-14 2:53am

Have you checked the SerialPort.BaudRate value to be the same as the one used by the external device?

Herman<T>.Instance 17-Apr-14 3:15am

which encoding is used?

Zhivko Kabaivanov 17-Apr-14 3:29am

what encoding is using for example the TextBox control?

Herman<T>.Instance 17-Apr-14 4:59am

it is about the encoding needed to read data from SerialPort in your application. The scanner will use some kind of Encoding, like UTF-8. So your do a SerialPort.ReadExisiting() to a string value but you should do that in combination with encoding

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CPallini · Answer 1 · 2014-04-16T21:18:00

Solution 1

You should check out the device documentation in order to:

Set properly the serial communication parameters (speed, parity bits...).
Understand the communication protocol.

Posted 16-Apr-14 21:18pm

CPallini