我有一些代码将串行端口加载到组合框中：
List<String> tList = new List<String>();
comboBoxComPort.Items.Clear();
foreach (string s in SerialPort.GetPortNames())
{
tList.Add(s);
}
tList.Sort();
comboBoxComPort.Items.Add("Select COM port...");
comboBoxComPort.Items.AddRange(tList.ToArray());
comboBoxComPort.SelectedIndex = 0;
我想将端口描述（类似于设备管理器中 COM 端口显示的内容）添加到列表中 并对列表中索引 0 之后的项目进行排序（已解决：请参阅上面的代码片段）。有人对添加端口描述有什么建议吗？我正在使用 Microsoft Visual C# 2008 Express Edition (.NET 2.0)。如果您有任何想法，我们将不胜感激。谢谢。
我在这里尝试了很多解决方案，但对我来说不起作用，只显示了一些端口。但下面显示了所有这些人和他们的信息。
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);
}
}
编辑：抱歉，我很快就跳过了你的问题。我现在意识到您正在寻找包含端口名称+端口描述的列表。我已经相应地更新了代码...
使用System.Management，您可以查询所有端口，以及每个端口的所有信息（就像设备管理器...）
示例代码（确保添加对 System.Management 的引用）：
using System;
using System.Management;
using System.Collections.Generic;
using System.Linq;
using System.IO.Ports;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
using (var searcher = new ManagementObjectSearcher
("SELECT * FROM WIN32_SerialPort"))
{
string[] portnames = SerialPort.GetPortNames();
var ports = searcher.Get().Cast<ManagementBaseObject>().ToList();
var tList = (from n in portnames
join p in ports on n equals p["DeviceID"].ToString()
select n + " - " + p["Caption"]).ToList();
tList.ForEach(Console.WriteLine);
}
// pause program execution to review results...
Console.WriteLine("Press enter to exit");
Console.ReadLine();
}
}
}
更多信息在这里：http://msdn.microsoft.com/en-us/library/aa394582%28VS.85%29.aspx
使用以下代码片段
执行时会给出以下输出。
serial port : Communications Port (COM1)
serial port : Communications Port (COM2)
别忘了添加
using System;
using System.Management;
using System.Windows.Forms;
还添加对
system.ManagementC#
private void GetSerialPort()
{
try
{
ManagementObjectSearcher searcher =
new ManagementObjectSearcher("root\\CIMV2",
"SELECT * FROM Win32_PnPEntity");
foreach (ManagementObject queryObj in searcher.Get())
{
if (queryObj["Caption"].ToString().Contains("(COM"))
{
Console.WriteLine("serial port : {0}", queryObj["Caption"]);
}
}
}
catch (ManagementException e)
{
MessageBox.Show( e.Message);
}
}
VB
Private Sub GetAllSerialPortsName()
Try
Dim searcher As New ManagementObjectSearcher("root\CIMV2", "SELECT * FROM Win32_PnPEntity")
For Each queryObj As ManagementObject In searcher.Get()
If InStr(queryObj("Caption"), "(COM") > 0 Then
Console.WriteLine("serial port : {0}", queryObj("Caption"))
End If
Next
Catch err As ManagementException
MsgBox(err.Message)
End Try
End Sub
更新： 您还可以检查
if (queryObj["Caption"].ToString().StartsWith("serial port"))
而不是
if (queryObj["Caption"].ToString().Contains("(COM"))
这里的答案都不能满足我的需求。
Muno 的答案是错误，因为它只列出了 USB 端口。
code4life 的答案是错误，因为它列出了除 USB 端口之外的所有端口。 （尽管如此，它还是有 44 票赞成！！！）
我的计算机上有一个 EPSON 打印机模拟端口，此处的任何答案均未列出该端口。所以我必须编写自己的解决方案。此外，我想显示更多信息，而不仅仅是标题字符串。我还需要将端口名称与描述分开。
我的代码已在 Windows XP、7、10 和 11 上进行了测试。
端口名称（如“COM1”）必须从 注册表 中读取，因为 WMI 不会为所有 COM 端口 (EPSON) 提供此信息。
如果您使用我的代码，您将不再需要SerialPort.GetPortNames()。我的函数返回相同的端口，但有更多详细信息。微软为什么不把这样的功能实现到框架中呢？？
using System.Management;
using Microsoft.Win32;
using (ManagementClass i_Entity = new ManagementClass("Win32_PnPEntity"))
{
foreach (ManagementObject i_Inst in i_Entity.GetInstances())
{
Object o_Guid = i_Inst.GetPropertyValue("ClassGuid");
if (o_Guid == null || o_Guid.ToString().ToUpper() != "{4D36E978-E325-11CE-BFC1-08002BE10318}")
continue; // Skip all devices except device class "PORTS"
String s_Caption = i_Inst.GetPropertyValue("Caption") .ToString();
String s_Manufact = i_Inst.GetPropertyValue("Manufacturer").ToString();
String s_DeviceID = i_Inst.GetPropertyValue("PnpDeviceID") .ToString();
String s_RegPath = "HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Enum\\" + s_DeviceID + "\\Device Parameters";
String s_PortName = Registry.GetValue(s_RegPath, "PortName", "").ToString();
int s32_Pos = s_Caption.IndexOf(" (COM");
if (s32_Pos > 0) // remove COM port from description
s_Caption = s_Caption.Substring(0, s32_Pos);
Console.WriteLine("Port Name: " + s_PortName);
Console.WriteLine("Description: " + s_Caption);
Console.WriteLine("Manufacturer: " + s_Manufact);
Console.WriteLine("Device ID: " + s_DeviceID);
Console.WriteLine("-----------------------------------");
}
}
我用很多 COM 端口测试了代码。这是控制台输出：
Port Name: COM29
Description: CDC Interface (Virtual COM Port) for USB Debug
Manufacturer: GHI Electronics, LLC
Device ID: USB\VID_1B9F&PID_F003&MI_01\6&3009671A&0&0001
-----------------------------------
Port Name: COM28
Description: Teensy USB Serial
Manufacturer: PJRC.COM, LLC.
Device ID: USB\VID_16C0&PID_0483\1256310
-----------------------------------
Port Name: COM25
Description: USB-SERIAL CH340
Manufacturer: wch.cn
Device ID: USB\VID_1A86&PID_7523\5&2499667D&0&3
-----------------------------------
Port Name: COM26
Description: Prolific USB-to-Serial Comm Port
Manufacturer: Prolific
Device ID: USB\VID_067B&PID_2303\5&2499667D&0&4
-----------------------------------
Port Name: COM1
Description: Comunications Port
Manufacturer: (Standard port types)
Device ID: ACPI\PNP0501\1
-----------------------------------
Port Name: COM999
Description: EPSON TM Virtual Port Driver
Manufacturer: EPSON
Device ID: ROOT\PORTS\0000
-----------------------------------
Port Name: COM20
Description: EPSON COM Emulation USB Port
Manufacturer: EPSON
Device ID: ROOT\PORTS\0001
-----------------------------------
Port Name: COM8
Description: Standard Serial over Bluetooth link
Manufacturer: Microsoft
Device ID: BTHENUM\{00001101-0000-1000-8000-00805F9B34FB}_LOCALMFG&000F\8&3ADBDF90&0&001DA568988B_C00000000
-----------------------------------
Port Name: COM9
Description: Standard Serial over Bluetooth link
Manufacturer: Microsoft
Device ID: BTHENUM\{00001101-0000-1000-8000-00805F9B34FB}_LOCALMFG&0000\8&3ADBDF90&0&000000000000_00000002
-----------------------------------
Port Name: COM30
Description: Arduino Uno
Manufacturer: Arduino LLC (www.arduino.cc)
Device ID: USB\VID_2341&PID_0001\74132343530351F03132
-----------------------------------
COM1是主板上的COM口。
COM 8 和 9 是蓝牙 COM 端口。
COM 25 和 26 是 USB 转 RS232 适配器。
COM 28、29 和 30 是类似 Arduino 的板。
COM 20 和 999 是 EPSON 端口。
获取有关 C# 中串口的更多信息嗨拉文布，
我们无法通过SerialPort类型获取信息。我不知道为什么您的应用程序中需要此信息。但是，有一个“已解决的线程”与您有相同的问题。您可以查看那里的代码，看看它是否可以帮助您。
如果您还有任何问题，请随时告诉我。 最诚挚的问候， 周布鲁斯
该帖子中的链接指向此帖子：
如何使用 System.IO.Ports.SerialPort 获取有关端口的更多信息
here您可能可以从 WMI 查询中获取此信息。查看此工具以帮助您找到正确的代码。你为什么要关心呢？这只是USB仿真器的一个细节，普通串口不会有这个。串行端口只是“COMx”，仅此而已。
我结合了以前的答案并使用了 Win32_PnPEntity 类的结构，可以在
using System.Management;
public static void Main()
{
GetPortInformation();
}
public string GetPortInformation()
{
ManagementClass processClass = new ManagementClass("Win32_PnPEntity");
ManagementObjectCollection Ports = processClass.GetInstances();
foreach (ManagementObject property in Ports)
{
var name = property.GetPropertyValue("Name");
if (name != null && name.ToString().Contains("USB") && name.ToString().Contains("COM"))
{
var portInfo = new SerialPortInfo(property);
//Thats all information i got from port.
//Do whatever you want with this information
}
}
return string.Empty;
}
SerialPortInfo 类：
public class SerialPortInfo
{
public SerialPortInfo(ManagementObject property)
{
this.Availability = property.GetPropertyValue("Availability") as int? ?? 0;
this.Caption = property.GetPropertyValue("Caption") as string ?? string.Empty;
this.ClassGuid = property.GetPropertyValue("ClassGuid") as string ?? string.Empty;
this.CompatibleID = property.GetPropertyValue("CompatibleID") as string[] ?? new string[] {};
this.ConfigManagerErrorCode = property.GetPropertyValue("ConfigManagerErrorCode") as int? ?? 0;
this.ConfigManagerUserConfig = property.GetPropertyValue("ConfigManagerUserConfig") as bool? ?? false;
this.CreationClassName = property.GetPropertyValue("CreationClassName") as string ?? string.Empty;
this.Description = property.GetPropertyValue("Description") as string ?? string.Empty;
this.DeviceID = property.GetPropertyValue("DeviceID") as string ?? string.Empty;
this.ErrorCleared = property.GetPropertyValue("ErrorCleared") as bool? ?? false;
this.ErrorDescription = property.GetPropertyValue("ErrorDescription") as string ?? string.Empty;
this.HardwareID = property.GetPropertyValue("HardwareID") as string[] ?? new string[] { };
this.InstallDate = property.GetPropertyValue("InstallDate") as DateTime? ?? DateTime.MinValue;
this.LastErrorCode = property.GetPropertyValue("LastErrorCode") as int? ?? 0;
this.Manufacturer = property.GetPropertyValue("Manufacturer") as string ?? string.Empty;
this.Name = property.GetPropertyValue("Name") as string ?? string.Empty;
this.PNPClass = property.GetPropertyValue("PNPClass") as string ?? string.Empty;
this.PNPDeviceID = property.GetPropertyValue("PNPDeviceID") as string ?? string.Empty;
this.PowerManagementCapabilities = property.GetPropertyValue("PowerManagementCapabilities") as int[] ?? new int[] { };
this.PowerManagementSupported = property.GetPropertyValue("PowerManagementSupported") as bool? ?? false;
this.Present = property.GetPropertyValue("Present") as bool? ?? false;
this.Service = property.GetPropertyValue("Service") as string ?? string.Empty;
this.Status = property.GetPropertyValue("Status") as string ?? string.Empty;
this.StatusInfo = property.GetPropertyValue("StatusInfo") as int? ?? 0;
this.SystemCreationClassName = property.GetPropertyValue("SystemCreationClassName") as string ?? string.Empty;
this.SystemName = property.GetPropertyValue("SystemName") as string ?? string.Empty;
}
int Availability;
string Caption;
string ClassGuid;
string[] CompatibleID;
int ConfigManagerErrorCode;
bool ConfigManagerUserConfig;
string CreationClassName;
string Description;
string DeviceID;
bool ErrorCleared;
string ErrorDescription;
string[] HardwareID;
DateTime InstallDate;
int LastErrorCode;
string Manufacturer;
string Name;
string PNPClass;
string PNPDeviceID;
int[] PowerManagementCapabilities;
bool PowerManagementSupported;
bool Present;
string Service;
string Status;
int StatusInfo;
string SystemCreationClassName;
string SystemName;
}
我不太清楚“对索引 0 之后的项目进行排序”是什么意思，但如果您只想对
SerialPort.GetPortNames()using Microsoft.Win32;
using System.Management;
using System.Runtime.Versioning;
public static class SerialPortSearcher
{
[SupportedOSPlatform("windows")]
public static IEnumerable<ISerialPortInfo> Search()
{
using var entity = new ManagementClass("Win32_PnPEntity");
foreach (var instance in entity.GetInstances().Cast<ManagementObject>())
{
var classGuid = instance.GetPropertyValue("ClassGuid");
// Skip all devices except device class "PORTS"
if (classGuid?.ToString()?.ToUpper() == "{4D36E978-E325-11CE-BFC1-08002BE10318}")
{
yield return new SerialPortInfo(instance);
}
}
}
[SupportedOSPlatform("windows")]
private class SerialPortInfo : ISerialPortInfo
{
public SerialPortInfo(ManagementObject obj)
{
this.Availability = obj.GetPropertyValue("Availability") as int? ?? 0;
this.Caption = obj.GetPropertyValue("Caption") as string ?? string.Empty;
this.ClassGuid = obj.GetPropertyValue("ClassGuid") as string ?? string.Empty;
this.CompatibleID = obj.GetPropertyValue("CompatibleID") as string[] ?? new string[] { };
this.ConfigManagerErrorCode = obj.GetPropertyValue("ConfigManagerErrorCode") as int? ?? 0;
this.ConfigManagerUserConfig = obj.GetPropertyValue("ConfigManagerUserConfig") as bool? ?? false;
this.CreationClassName = obj.GetPropertyValue("CreationClassName") as string ?? string.Empty;
this.Description = obj.GetPropertyValue("Description") as string ?? string.Empty;
this.DeviceID = obj.GetPropertyValue("DeviceID") as string ?? string.Empty;
this.ErrorCleared = obj.GetPropertyValue("ErrorCleared") as bool? ?? false;
this.ErrorDescription = obj.GetPropertyValue("ErrorDescription") as string ?? string.Empty;
this.HardwareID = obj.GetPropertyValue("HardwareID") as string[] ?? new string[] { };
this.InstallDate = obj.GetPropertyValue("InstallDate") as DateTime? ?? DateTime.MinValue;
this.LastErrorCode = obj.GetPropertyValue("LastErrorCode") as int? ?? 0;
this.Manufacturer = obj.GetPropertyValue("Manufacturer") as string ?? string.Empty;
this.Name = obj.GetPropertyValue("Name") as string ?? string.Empty;
this.PNPClass = obj.GetPropertyValue("PNPClass") as string ?? string.Empty;
this.PNPDeviceID = obj.GetPropertyValue("PnpDeviceID") as string ?? string.Empty;
this.PowerManagementCapabilities = obj.GetPropertyValue("PowerManagementCapabilities") as int[] ?? new int[] { };
this.PowerManagementSupported = obj.GetPropertyValue("PowerManagementSupported") as bool? ?? false;
this.Present = obj.GetPropertyValue("Present") as bool? ?? false;
this.Service = obj.GetPropertyValue("Service") as string ?? string.Empty;
this.Status = obj.GetPropertyValue("Status") as string ?? string.Empty;
this.StatusInfo = obj.GetPropertyValue("StatusInfo") as int? ?? 0;
this.SystemCreationClassName = obj.GetPropertyValue("SystemCreationClassName") as string ?? string.Empty;
this.SystemName = obj.GetPropertyValue("SystemName") as string ?? string.Empty;
var regPath = "HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Enum\\" + PNPDeviceID + "\\Device Parameters";
this.PortName = Registry.GetValue(regPath, "PortName", "")?.ToString();
//int i = Caption.IndexOf(" (COM");
//if (i > 0) // remove COM port from description
// Caption = Caption.Substring(0, i);
}
public int Availability { get; }
public string Caption { get; }
public string ClassGuid { get; }
public string[] CompatibleID { get; }
public int ConfigManagerErrorCode { get; }
public bool ConfigManagerUserConfig { get; }
public string CreationClassName { get; }
public string Description { get; }
public string DeviceID { get; }
public bool ErrorCleared { get; }
public string ErrorDescription { get; }
public string[] HardwareID { get; }
public DateTime InstallDate { get; }
public int LastErrorCode { get; }
public string Manufacturer { get; }
public string Name { get; }
public string PNPClass { get; }
public string PNPDeviceID { get; }
public int[] PowerManagementCapabilities { get; }
public bool PowerManagementSupported { get; }
public bool Present { get; }
public string Service { get; }
public string Status { get; }
public int StatusInfo { get; }
public string SystemCreationClassName { get; }
public string SystemName { get; }
public string? PortName { get; }
}
}
public interface ISerialPortInfo
{
int Availability { get; }
string Caption { get; }
string ClassGuid { get; }
string[] CompatibleID { get; }
int ConfigManagerErrorCode { get; }
bool ConfigManagerUserConfig { get; }
string CreationClassName { get; }
string Description { get; }
string DeviceID { get; }
bool ErrorCleared { get; }
string ErrorDescription { get; }
string[] HardwareID { get; }
DateTime InstallDate { get; }
int LastErrorCode { get; }
string Manufacturer { get; }
string Name { get; }
string PNPClass { get; }
string PNPDeviceID { get; }
string? PortName { get; }
int[] PowerManagementCapabilities { get; }
bool PowerManagementSupported { get; }
bool Present { get; }
string Service { get; }
string Status { get; }
int StatusInfo { get; }
string SystemCreationClassName { get; }
string SystemName { get; }
}
在Program.cs中进行测试：
using System.Text.Json;
var ports = SerialPortSearcher.Search().ToArray();
Console.WriteLine(JsonSerializer.Serialize(ports, new JsonSerializerOptions { WriteIndented = true }));
this.comboPortName.Items.AddRange(
(from qP in System.IO.Ports.SerialPort.GetPortNames()
orderby System.Text.RegularExpressions.Regex.Replace(qP, "~\\d",
string.Empty).PadLeft(6, '0')
select qP).ToArray()
);