How to Retrieve Serial Port Descriptions in C#?

Retrieving Serial Port Descriptions

The supplied code effectively loads serial port names into a combo-box. To enhance this functionality, acquiring the corresponding port descriptions is desirable. This article presents an approach for obtaining such descriptions using the ManagementObjectSearcher class in Microsoft.Management namespace.

<code class="c#">using Microsoft.Management;

...

using (var searcher = new ManagementObjectSearcher("SELECT * FROM Win32_PnPEntity WHERE Caption like '%(COM%'"))
{
    var portnames = SerialPort.GetPortNames();
    var ports = searcher.Get().Cast<ManagementBaseObject>().ToList().Select(p => p["Caption"].ToString());

    var portList = portnames.Select(n => n + " - " + ports.FirstOrDefault(s => s.Contains(n))).ToList();
    
    foreach(string s in portList)
    {
        Console.WriteLine(s);
    }
}</code>

The above code:

• Creates a ManagementObjectSearcher to query for all PnP entities whose captions contain "(COM".
• Obtains an array of port names using SerialPort.GetPortNames().
• Maps the port names to their corresponding captions using the searcher.
• Formats the port names and captions in the desired format.
• Displays the extended list with port descriptions.

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