Detecting if a microphone is available c#

Question

Detecting if a microphone is available c#

Hemanth B 856

Hi, I created an audio recorder in c# but I want it to display a messagebox if there is no audio input / audio output just like Windows 10 Voice Recorder. How am I supposed to do that.? Also how can I list out all the list of devices connected to the system in a listbox?

Answer 1

Castorix31 69,256

With Core Audio APIs, like in the sample I posted in this thread Detect Audio on Windows 10
(you can change EDataFlow)
or another more advanced sample : Core Audio APIs test

Hemanth B 856 Reputation points

2021-07-16T08:47:07.313+00:00

Does your code sample include an audio input detection?
Castorix31 69,256 Reputation points

2021-07-16T08:51:53.877+00:00

In the second one, I enumerate in a ListView all audio devices :
Hemanth B 856 Reputation points

2021-07-16T09:21:46.043+00:00

Ok thanks, your code works great! but how do I display a message box specifically if there is no audio device at all?
Castorix31 69,256 Reputation points

2021-07-16T09:30:20.277+00:00

You could just count them with pDeviceCollection.GetCount
(either with EDataFlow.eAll or EDataFlow.eRender or EDataFlow.eCapture)
(I used DEVICE_STATE_ACTIVE | DEVICE_STATE_UNPLUGGED | DEVICE_STATE_DISABLED to list them all, you could just use DEVICE_STATE_ACTIVE)
Hemanth B 856 Reputation points

2021-07-16T09:48:35.263+00:00

Ok thnx so much! It works. Can you help me with this one also:
https://learn.microsoft.com/en-us/answers/questions/478412/saving-listbox-data-with-file-paths-c.html

Detecting if a microphone is available c#

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