查找串口ObjectQuery("SELECT*FROMWin32_SerialPort")

　　　　　String tmpstr1 = "";
string tmpPort = "";
List usefulPort = new List();
private void openAccleComprot()
{
//COM查找/
ObjectQuery query = new ObjectQuery("SELECT * FROM Win32_SerialPort"); // Win32_USBControllerDevice
ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);
usefulPort.Clear();
int loadCount = 0;
//根据自己设定的特征查找/
foreach (ManagementObject obj2 in searcher.Get())
{
if (obj2.Properties["PNPDeviceID"].Value.ToString().Contains(@"USB\VID_26AC&PID_0010"))
{
//MessageBox.Show(obj2.Properties["Name"].Value.ToString());
tmpstr1 = obj2.Properties["Name"].Value.ToString();
usefulPort.Add(tmpstr1);
loadCount++;
}
}
string[] allports = SerialPort.GetPortNames();
foreach (string port in allports)
{
if (tmpstr1.Contains(port))
{
//MessageBox.Show(port);
tmpPort = port;
}
}
}

class USBDeviceInfo
{
public USBDeviceInfo(string deviceID, string pnpDeviceID, string description)
{
this.DeviceID = deviceID;
this.PnpDeviceID = pnpDeviceID;
this.Description = description;
}
public string DeviceID { get; private set; }
public string PnpDeviceID { get; private set; }
public string Description { get; private set; }
}

[Dynamic, provider("CIMWin32"), UUID("{98C7E2C7-D592-11d2-B355-00105A0A323A}"), AMENDMENT]
class Win32_USBController : CIM_USBController
{
uint16 Availability;
string Caption;
uint32 ConfigManagerErrorCode;
boolean ConfigManagerUserConfig;
string CreationClassName;
string Description;
string DeviceID;
boolean ErrorCleared;
string ErrorDescription;
datetime InstallDate;
uint32 LastErrorCode;
string Manufacturer;
uint32 MaxNumberControlled;
string Name;
string PNPDeviceID;
uint16 PowerManagementCapabilities[];
boolean PowerManagementSupported;
uint16 ProtocolSupported;
string Status;
uint16 StatusInfo;
string SystemCreationClassName;
string SystemName;
datetime TimeOfLastReset;
};