如何找到可用的COM端口？

Question

如何在我的电脑中找到可用的COM端口？我正在使用框架v1.1。是否可以找到所有COM端口？如果可能，请帮助我解决问题。

Answer 1

正如其他人所建议的，您可以使用WMI。您可以在CodeProject中找到一个示例

try
{
    ManagementObjectSearcher searcher =
        new ManagementObjectSearcher("root\\WMI",
        "SELECT * FROM MSSerial_PortName");

    foreach (ManagementObject queryObj in searcher.Get())
    {
        Console.WriteLine("-----------------------------------");
        Console.WriteLine("MSSerial_PortName instance");
        Console.WriteLine("-----------------------------------");
        Console.WriteLine("InstanceName: {0}", queryObj["InstanceName"]);

        Console.WriteLine("-----------------------------------");
        Console.WriteLine("MSSerial_PortName instance");
        Console.WriteLine("-----------------------------------");
        Console.WriteLine("PortName: {0}", queryObj["PortName"]);

        //If the serial port's instance name contains USB 
        //it must be a USB to serial device
        if (queryObj["InstanceName"].ToString().Contains("USB"))
        {
            Console.WriteLine(queryObj["PortName"] + " 
            is a USB to SERIAL adapter/converter");
        }
    }
}
catch (ManagementException e)
{
    Console.WriteLine("An error occurred while querying for WMI data: " + e.Message);
} 

Framework v1.1 AFAIK不允许您执行此操作。

在2.0中有一个静态函数

SerialPort.GetPortNames()