[2005] CD/DVD Eject using WMI

well, I am looking for the code to eject CD using WMI class. May be System.Management can do this but as I am extremely new to .NET I need ur help.

I have used mciSendMessage but it's giving me the error. However, I prefer to use System.Management namespace if it can possible thurgh it..

I am Using .NET 2005 ..

bye

I use this when I want to eject the disc tray:

VB Code:

Private Declare Function mciSendString Lib "winmm.dll" Alias "mciSendStringA" _
      (ByVal lpstrCommand As String, _
      ByVal lpstrReturnString As String, _
      ByVal uReturnLength As Int32, _
      ByVal hwndCallback As Int32) As Int32
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        mciSendString("set CDAudio door open", Nothing, 127, 0)
    End Sub

not wmi but hey it works :wave:

Well It's working fine compare to my previous code.. :)

VB Code:

mciSendString("set CDAudio door open", 0, 0, 0)

btw, can u plz add comment so that i can understand the function..

Moreover, I have also found one link which seems to use WMI but i can't understand the code..

http://www.mredkj.com/netconversions/cdevents.html

If some one can explain it to me than it would be great..

The link is to detect when the tray has been ejected or loaded (propbably by detecting when media arrives.)

gigemboy shows how to eject a specific drive with mciSendString here:
http://www.vbforums.com/showthread.p...ighlight=eject
here's load/unload/lock/unlock by various methods:
http://www.vbforums.com/showthread.php?t=357496

Use MciSendstring, there is no method to eject using WMI.
Look up MCI in the msdn library...

GREAT dude. I am just looking for this ..