访问被拒绝的串口 [英] Access denied serial port

问题描述

我已经在C＃，dot net中开发并执行了串口通信。



我的代码在所有串口都能正常工作，除非我连接加密狗（TATA PHOTON）并断开连接。然后，如果我执行我的串口代码，我收到异常，因为拒绝访问请告知此事。加密狗正确断开连接。在此先感谢。

解决方案

检查您的代码：它可能没有注意到断开连接，并且已经打开了SerialPort实例。如果你这样做，尝试连接一个新的将失败，因为端口正在使用。



确保当它断开连接时，你关闭并处置任何现有的实例

I have developed and executed serial port communication in C#, dot net.

My code is working fine with all serial ports in the lap, Unless I connect dongle (TATA PHOTON) and disconnect it. Then if I execute my serial port code I am receiving exception as "Access denied" Kindly advise on this. Dongle is disconnected properly. Thanks in advance.

解决方案

Check your code: the chances are it hasn't noticed the disconnect, and has left the SerialPort instance open. If you do that, trying to connect a new one will fail because the port is in use.

Make sure that when it disconnects, you close and dispose any existing instances.

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