In Windows 8.1 Pro, the connected USB device list is not showing while USB device is showing into Device Manager(Control Panel). I have a .NET 3.5 application, where I am using the following code to get the list of connected USB Serial Port device ManagementObjectCollection collection; using (var searcher = new ManagementObjectSearcher(@ "Select * From Win32_SerialPort" )) { string paytmUPIPort = "" ; collection = searcher.Get(); foreach (var serialDevice in collection) { paytmUPIPort = string .Format( "{0}" , serialDevice.GetPropertyValue( "DeviceID" )); if (paytmUPIPort.ToUpper().Contains( "COM" )) { collection.Dispose(); return paytmUPIPort; } } } collection.Dispose();

Issue resolved. It was not an OS version issue. The System.Management.dll was missing into GAC

Answer

Win32_SerialPort Class not working in Windows 8.1 Pro

Praveen Kumar

973

In Windows 8.1 Pro, the connected USB device list is not showing while USB device is showing into Device Manager(Control Panel).

I have a .NET 3.5 application, where I am using the following code to get the list of connected USB Serial Port device

ManagementObjectCollection collection;
using (var searcher = new ManagementObjectSearcher(@"Select * From Win32_SerialPort"))
{
string paytmUPIPort = "";
collection = searcher.Get();
foreach (var serialDevice in collection)
{
paytmUPIPort = string.Format("{0}", serialDevice.GetPropertyValue("DeviceID"));
if(paytmUPIPort.ToUpper().Contains("COM"))
{
collection.Dispose();
return paytmUPIPort;
}
}
}
collection.Dispose();