asked on

Win32_NetworkAdapter Array ToString()???

I would like ONE long continuous string of ALL MAC Addresses instead of several individual ones provided by the following method.

ManagementObjectSearcher find = new ManagementObjectSearcher("SELECT * FROM Win32_NetworkAdapter");
foreach (ManagementObject mo in find.Get())
{
string NicMacAddr = (mo["MACAddress"].ToString());
}

ASKER CERTIFIED SOLUTION

mrichmon

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kvnsdr

ASKER

Can't get it to work. I was thinking about:

foreach (ManagementObject mo in find.Get())
{
string[] NicMacAddr = (mo["MACAddress"].ToString());
}

mrichmon

What is an error you are getting?

kvnsdr

ASKER

"Object reference not set to the instance of an object."

NicMacAddr += (NicMacAddr.Length == 0 ? "; " : "") + (mo["MACAddress"].ToString());

mrichmon

Did you include the first line above the loop to define the variable as a string?

kvnsdr

ASKER

oh yes, just didn't include in comment.

mrichmon

If the code you provided initially was working, then the changes I showed would give the results you want. But it is possible tha tthe error is from that code...

kvnsdr

ASKER

I find it interesting that my code gives the following results.

Notice the duplicate MACs and the blanks that are probably throwing an error with your code.

I only have 2 NICs in the test machine........

I've been using a BREAK; after my code to prevent errors........

MAC Address... D1:FD:04:5E:2D:A4
MAC Address...
MAC Address...
MAC Address... 40:50:44:51:20:20
MAC Address... 23:50:6E:55:20:20
MAC Address...
MAC Address...
MAC Address... 20:02:20:51:42:23
MAC Address... 00:0A:D1:7C:E6:CA
MAC Address... 00:0A:D1:7C:E6:CA