如何在端口中拒绝解决访问权限 [英] How do I solve access is denied in port

问题描述

SerialPort port = new SerialPort（COM36）;

port.Open（）;

string t = port.ReadExisting（）;

Thread.Sleep（100）;



string cmd =ATD;

Thread.Sleep（100）;

string phoneNumber =;

Thread.Sleep（100）;

port.WriteLine（cmd + phoneNumber +; \ r） ;



port.Close（）;



错误是COM36上的访问被拒绝，我不是确定为什么

SerialPort port = new SerialPort("COM36");
port.Open();
string t = port.ReadExisting();
Thread.Sleep(100);

string cmd = "ATD";
Thread.Sleep(100);
string phoneNumber = "";
Thread.Sleep(100);
port.WriteLine(cmd + phoneNumber + ";\r");

port.Close();

The error is access denied on COM36, I am not sure why

推荐答案

该端口不存在或被其他进程保持打开状态。

The port either doesn't exist or is being held open by some other process.

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