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C#: Win32_POTSModem doesn't found all installed modems

Posted By:      Posted Date: September 23, 2010    Points: 0   Category :.NET Framework


I us e the following code to get a list of all installed modems.

private List<MyModem> modems = new List<MyModem>();

var searcher = new ManagementObjectSearcher("SELECT * FROM Win32_POTSModem");
var collection = searcher.Get();

// Loop over returned data
foreach (ManagementObject modemObject in collection)
  var modem = new MyModem {Name = modemObject["Name"].ToString()};

  // Add the modem to the array
This code is running without any errors on many computers. Now one of our customer have a problem with this code. His modem (AVM ISDN) will not found. Before i change my code to WMI i use the RasEnumDevices() API. The 'old way' to search all installed modems found the AVD modem. WMI doesn't found the modem.

Is this a general problem of WMI? Must i change my new code back to&n

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