List of capture devices (e.g. Microphone, Stereo Mix…) in C#

Question

how can i get list of avalible sound devices? I mean something as in that image.

I want it in combobox. I mean only:

• Microphone
• Stereo Mix
• Line In
• ..and more..

But must it really be that because the system changes the name of the device according to language localization system, and that's what I need.

For example, in my langueage is Microphone called Mikrofon and Stereo Mix = Směšovač stereo

AND I NEED GET THIS NAMES OF DEVICES, nothing other

Can make somebody example code?

Answer 1

This is do what I need..

    [DllImport("winmm.dll", SetLastError = true)]
    static extern uint waveInGetNumDevs();

    [DllImport("winmm.dll", SetLastError = true, CharSet = CharSet.Auto)]
    public static extern uint waveInGetDevCaps(uint hwo, ref WAVEOUTCAPS pwoc, uint cbwoc);

    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
    public struct WAVEOUTCAPS
    {
        public ushort wMid;
        public ushort wPid;
        public uint vDriverVersion;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 64)]
        public string szPname;
        public uint dwFormats;
        public ushort wChannels;
        public ushort wReserved1;
        public uint dwSupport;
    }

    public static string[] GetSoundDevices()
    {
        uint devices = waveInGetNumDevs();
        string[] result = new string[devices];
        WAVEOUTCAPS caps = new WAVEOUTCAPS();
        using (StreamWriter sw = new StreamWriter("appdata/audio/name"))
        {
            for (uint i = 0; i < devices; i++)
            {
                waveInGetDevCaps(i, ref caps, (uint)Marshal.SizeOf(caps));
                result[i] = caps.szPname;
                sw.WriteLine(caps.szPname);
            }
            return result;
        }
    }

.. BUT each line is shortened and I can not write it all.

How to modify the code that listed the names of the whole?

Thanks!

Answer 2

use this it worked for me

using NAudio.CoreAudioApi;

MMDeviceEnumerator names = new MMDeviceEnumerator();
var devices = names.EnumerateAudioEndPoints(DataFlow.Capture, DeviceState.Active);            
foreach (var device in devices)
    MessageBox.Show(device.friendlyName);

Answer 3

Following code should help you getting the list of audio devices,

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));
        }
    }

Now, you can enumerate on the list using for-each .

Edited

Output will be something like this,

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
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

Take Caption value from the list. It is simple text parsing problem ;)