Here is code to enumerate audio devices in C#, using WMI (reference System.Management).
ManagementObjectSearcher objSearcher = new ManagementObjectSearcher(
"SELECT * FROM Win32_SoundDevice");
ManagementObjectCollection objCollection = objSearcher.Get();
foreach (ManagementObject obj in objCollection)
{
foreach (PropertyData property in obj.Properties)
{
Console.Out.WriteLine(String.Format("{0}:{1}", property.Name, property.Value));
}
}
Which results in output something like:
Availability: Caption:USB Audio Device ConfigManagerErrorCode:0 ConfigManagerUserConfig:False CreationClassName:Win32_SoundDevice Description:USB Audio Device DeviceID:USB\VID_047F&PID_0CA1&MI_00\6&2C037688&0&0000 DMABufferSize: ErrorCleared: ErrorDescription: InstallDate: LastErrorCode: Manufacturer:(Generic USB Audio) MPU401Address: Name:USB Audio Device PNPDeviceID:USB\VID_047F&PID_0CA1&MI_00\6&2C037688&0&0000 PowerManagementCapabilities: PowerManagementSupported:False ProductName:USB Audio Device Status:OK StatusInfo:3 SystemCreationClassName:Win32_ComputerSystem SystemName: Availability: Caption:Realtek AC'97 Audio for VIA (R) Audio Controller ConfigManagerErrorCode:0 ConfigManagerUserConfig:False CreationClassName:Win32_SoundDevice Description:Realtek AC'97 Audio for VIA (R) Audio Controller DeviceID:PCI\VEN_1106&DEV_3059&SUBSYS_09011558&REV_60\3&61AAA01&1&8D DMABufferSize: ErrorCleared: ErrorDescription: InstallDate: LastErrorCode: Manufacturer:Realtek MPU401Address: Name:Realtek AC'97 Audio for VIA (R) Audio Controller PNPDeviceID:PCI\VEN_1106&DEV_3059&SUBSYS_09011558&REV_60\3&61AAA01&1&8D PowerManagementCapabilities: PowerManagementSupported:False ProductName:Realtek AC'97 Audio for VIA (R) Audio Controller Status:OK StatusInfo:3 SystemCreationClassName:Win32_ComputerSystem SystemName: Availability:
WMI annoyingly does not appear to distinguish simply between input and output devices for audio. However, using the managed interface to DirectSound, and the DevicesCollection class, as below (reference Microsoft.DirectX.DirectSound), we can get a lot more sound-oriented information.
DevicesCollection devColl = new DevicesCollection();
foreach (DeviceInformation devInfo in devColl)
{
Device dev = new Device(devInfo.DriverGuid);
//use dev.Caps, devInfo to access a fair bit of info about the sound device
}